APA Style references for online and print works are largely the same.
All references generally include the principles elements of reference list entries:
author: who is responsible for this work?
date: when was this work published?
title: what is this work called?
source. where can I retrieve this work?
Differences between online and print versions could be seen in the source element (see DOIs and URLs below for more details).
When to use webpages and websites category?
If multiple webpages from a website is cited, create a reference for each.
If website is mentioned only general, do not create a reference list entry or an in-text citation.
Guidelines to format the website source:
For webpage reference example, please refer to: https://libguides.nus.edu.sg/APA/references
Guidelines for including DOIs and URLs in references:
For details, refer to Chapter 9 (9.3 Online and Print References, p 282) of the APA Publication Manual (7th Ed.)