ProQuest: New York Times, Washington Post
Discover (back issues available in ProQuest Science, current articles on Discover website)
Purdue OWL has excellent APA formatting information and examples. Below are a few sample citations, but the OWL website has examples for many other types of citations.
____________________________________________
Webpage or other online material:
Author, A. A., & Author, B. B. (Date of publication). Title of article. Title of Online Periodical, volume number(issue number if available). Retrieved from http://www.someaddress.com/full/url/
Online journal:
Author, A. A. & Author B. B. (Date of publication). Title of page [Format description when necessary]. Retrieved from https://www.someaddress.com/full/url/