Here is how you cite an online joural or magazine article that you found in a database, but doesn't have a DOI:
(Include the homepage of the magazine/journal. You may have to perform a quick websearch to find this.)
Author's Last Name, First Initial(s). (Publication Date). Title of article.
Title of Magazine/Journal, Volume Number(Issue Number), page numbers. Retrieved from url.
Broida, R. (2013, July). Uninstall unwanted apps in Windows 8. PC World, 31(7), 94. Retrieved