Reasons:
1. To acknowledge the information sources you used to support your statements.
2. Show academic integrity and avoid plagiarism.
3. Share the information sources you found by citing accurately so that your readers can trace the sources.
Find examples of APA 6th Citation Style here.
Unless otherwise stated, the contents in this GEQ1917 guide © by National University of Singapore Libraries is licensed under CC BY-NC 4.0 
. Attribute and link back to this LibGuide if you are going to re-use the content.
Website:
National Environment Agency. (n.d.). Singapore's efforts in addressing climate change. https://www.nea.gov.sg/our-services/climate-change-energy-efficiency/climate-change/singapore%27s-efforts-in-addressing-climate-change
National Climate Change Secretariat (2016). Take action today for a carbon-efficient Singapore. https://www.nccs.gov.sg/docs/default-source/publications/take-action-today-for-a-carbon-efficient-singapore.pdf
Nature Society Singapore. (n.d.). Every Singaporean a naturalist. https://www.nss.org.sg/project.aspx?id=47
News website:
Ang, H.M. (2019, September 9). Biodegradable plastic alternatives not necessarily better for Singapore, says experts. Channel News Asia. https://www.channelnewsasia.com/news/singapore/biodegradable-plastic-alternatives-not-necessarily-better-for-11854322
Chong, C. (2020, November 22). Cycle and hike along Lornie Nature Corridor, the latest addition to S'pore's green efforts. The Straits Times. https://www.straitstimes.com/singapore/cycle-and-hike-along-lornie-nature-corridor-the-latest-addition-to-spores-green-efforts
Freedman, A., Samenow, J. & Brady, D. (2020, November 12). Trump administration official who questions global warming will run key climate program. The Washington Post. https://www.washingtonpost.com/weather/2020/11/11/climate-science-office-david-legates/
E-journal article:
Khoo, H. H. (2019). LCA of plastic waste recovery into recycled materials, energy and fuels in Singapore. Resources, Conservation and Recycling, 145, 67-77. doi:10.1016/j.resconrec.2019.02.010
Grandhi, B., & Appaiah Singh, J. (2016). What a waste! A study of food wastage behavior in Singapore. Journal of Food Products Marketing, 22(4), 471-485. doi:10.1080/10454446.2014.885863
Paritosh, K., Kushwaha, S. K., Yadav, M., Pareek, N., Chawade, A., & Vivekanand, V. (2017). Food waste to energy: An overview of sustainable approaches for food waste management and nutrient recycling. BioMed Research International, 2017, 1-19. doi:10.1155/2017/2370927
Images:
Yap, F. (n.d.). Zebra dove [Photograph]. National Parks. https://www.nparks.gov.sg/juronglakegardens/explore-our-gardens/animals/birds/garden-and-urban-birds
Inhabitat (n.d.). [Decafe lamp] [Photograph]. https://inhabitat.com/brilliant-decafe-lamp-is-made-from-recycled-coffee-grounds/
GenieRecycling.com. (n.d.). How to recycle clothing and accessories [Infographic]. Visually. https://visual.ly/community/Infographics/environment/how-recycle-clothing-accessories
Recycling sign (n.d.). Clipart Library. http://clipart-library.com/clipart/pi58yXAyT.htm
Powerpoint slides:
Group 1X (2017). Let us stop food wastage [PowerPoint slides]
E-book:
van der Ven, H. (2019). Beyond greenwash: Explaining credibility in transnational eco-labeling. Oxford University Press. https://oxford-universitypressscholarship-com.libproxy1.nus.edu.sg/view/10.1093/oso/9780190866006.001.0001/oso-9780190866006
E-book chapter:
Singapore transitioning towards urban water security. (2016). In R.C. Brears (Ed.), Urban water security. Wiley. doi:10.1002/9781119131755.ch13
Video:
Now This World. (2016, July 1). How this Japanese town produces almost no trash [Video]. Youtube. https://youtu.be/MU4uVzRvts0
NYCityLens. (2017, February 17). Waste not want not: An e-waste story [Video]. Vimeo. https://vimeo.com/203055576
WeAreTeachers. (n.d.). Recycle drop game to promote recycling [Video]. Facebook. https://www.facebook.com/watch/?v=2205452502812823
Patent:
Caragol, R.A. (2016). Information systems and methods for food storage (U.S. Patent 9436771). United States Patents and Trademark Office. http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=/netahtml/PTO/search-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN/9436771