General format for websites:

Author last name, First name. “Title of Web Page.” Title of Entire Web Site. Publisher or copyright holder, Date of  last update or copyright. Full Url. Day Month Year of access.

Example: 

Stepler, Renee, and Mark Hugo Lopez. “U.S. Latino Population Growth and Dispersion Has Slowed Since        the Onset of the Great Recession,” Pewhispanic, Pew Research Center, 8 Sept. 2016.                                www.pewhispanic.org/2016/09/08/latino-population-growth-and-dispersion-has-slowed-since-the-                onset-of-the-great-recession/. Accessed 12 Sept. 2016. 

If the webpage does not have a personal author listed the list the group or publisher of the website at the beginning of the citation as the author (in addition to listening them as the sponsor).

You may also consult the Library's page on common website examples or Purdue University's Online Writing Lab (OWL), for additional information about citing electronic sources.