The basic format would be:
Last Name Initials[period] Year[period]Article title[period] Abbreviated Journal Title[period] Volume (issue)[colon] 1st page number[hyphen]last page number[period]
The basic rules for citing do not differ for internet items from what is required for print. Simply listing a URL is not sufficient
All the publication information should also be listed as in the examples below
Add [accessed date] after the journal name
Add the URL at the end
Online Scholarly Article
Savage E, Ramsay M, White J, Beard S, Lawson H, Hunjan R, Brown D. 2005. Mumps outbreaks across England and Wales in 2004: observational study. BMJ. [accessed 2007 May 31]; 330(7500):1119-1120. http://bmj.bmjjournals.com/cgi/reprint/330/7500/1119 doi:10.1136/bmj.330.7500.119.
Article in a scholarly journal
Cox J, Engstrom RT. 2001. Influence of the spatial pattern of conserved lands on the persistence of a large population of red-cockaded woodpeckers. Biol Conserv. 100(1): 137-150.
Article in Conference Proceedings
Lee DJ, Bates D, Dromey C, Xu X, Antani S. c2003. An imaging system correlating lip shapes with tongue contact patterns for speech pathology research. In: Krol M, Mitra S, Lee DJ, editors. CBMS 2003. Proceedings of the 16th IEEE Symposium on Computer-Based Medical Systems; 2003 Jun 26027; New York. Los Alamitos (CA): IEEE Computer Society; P.307-313.
Feller BA. 1981. Health characteristics of persons with chronic activity limitation, United States, 1979. Hyattsville (MD): National Center for Health Statistics (US); Report No.: VHS-SER-10/137. Available from: NTIS, Springfield, VA; PB88-228622.
Article in a magazine (include volume # if given)
Losos JB. 2001 Mar. Evolution: A lizard's tale. Sci Am. 284(3): 64-69.
Article in a daily newspaper
Yoon CK. 2000 Dec 26. DNA clues improve outlook for red wolf. New York Times. Sect. F:10 (col. 1).