Here are 2 examples of commonly used references to documents found Online and/or via the Internet:
National Center for Health Statistics. National Health and Nutrition Examination Survey. Version current 1 October 2003. Internet: http://www.cdc.gov/nchs/nhanes.htm (accessed 13 October 2003).
2) Online journal article
Sinha A, Madden J, Ross-Degnan D, Soumerai S, Platt R. Reduced risk of neonatal respiratory infections among breastfed girls but not boys. Pediatrics [serial online] 2003;112:e303. Internet: http://pediatrics. aappublications.org/cgi/content/full/112/4/e303 (accessed 14 October 2003).