The fourth edition of the ASA style guide recommends that the issue number be included after the volume number of the journal. If they are included, they should be used throughout the reference list.
Dissertation or Thesis in print or microfilm form:
Dissertation or Thesis retrieved from database:
Working papers, unpublished papers, discussion papers, presentations:
The general rules for print materials apply to e-resources as well, with some additional things such as the URL and date of access to add in the citations.
Journal articles (e-journals) with URL:
Journal articles (e-journals) with DOI: