With citation management software you can:
Some options are EndNote, and Zotero. Here's how to use them:
Examples:
ACS [w/ title] Format - Journal Article:
Holliday, A. E.; Holliday, N. J.; Mattingly, T. M.; Naccarato, K. M., Defensive Secretions of the Carabid Beetle Chlaenius cordicollis: Chemical Components and their Geographic Patterns of Variation. Journal of Chemical Ecology 2012, 38 (3), 278-286.
ACS [no title] Format - Journal Article:
Paley, R. S.; Laupheimer, M. C.; Erskine, N. A. K.; Rablen, P. R.; Pike, R. D.; Jones, J. S., Organic Letters 2011, 13 (1), 58-61.
ACS Format - Nonscientific Magazines & Newspapers (Print):
Fountain, H.A. Rogue Climate Experiment Has Ocean Experts Outraged. The New York Times, Oct 19, 2012, p A1.
ACS Format - Nonscientific Magazines & Newspapers (Online):
Fountain, H.A. Rogue Climate Experiment Has Ocean Experts Outraged. The New York Times, Oct 19, 2012.
http://www.nytimes.com/2012/10/19/science/earth/iron-dumping-experiment-in-pacific-alarms-marine-experts.html (accessed Nov 19, 2012).
ACS Format - Book:
Voet, D.; Voet, J. G.; Pratt, C. W., Fundamentals of biochemistry: life at the molecular level, 4th ed.; Wiley: Hoboken, NJ, 2013; pp 32-47.
Web Sites:
Crasto, A. One Million Hits on Google. http://amcrasto.theeurekamoments.com /2012/01/09/million-hits-on-google/ (accessed September 7, 2012).