Last Name of Author, First Name of Author. Year. "Title of Article." Name of Journal or Magazine. Volume Number (Issue Number): Page Numbers. doi:... .
When citing an e-resource, give the DOI (Digital Object Identifier):
Adam, Barry and Eleanor Maticka-Tyndale. 2011. "Emerging Directions in Sociological Research on Sexuality." Canadian Review of Sociology 48(3):217-220. doi: 10.1111/j.1755-618X.2011.01263.x.
If there is no DOI, then give the date on which you retrieved the item and the URL from which you retrieved it:
Cull, Barry W. “Reading Revolutions: Online Digital text and implications for reading in academe. First Monday 16(6). Retrieved October 19, 2011 (http://firstmonday.org/htbin/cgiwrap/bin/ojs/index.php/fm/article/viewArticle/3340/2985)