Be sure that your sources are cited accurately and in the correct format.
These tools provide online guidance for the major citation styles (APA, MLA, Chicago, and Turabian), with examples for both print and online sources:
Research and Citation Resources from Purdue Online Writing Lab (OWL)
Citing Sources from Duke University Library
Research and Documentation Online by Diana Hacker
These handouts were developed by the Parkland Library Staff and the Writing Center:
Here is a good place to place links to particular citation styles used in the subject area for your guide.
Some general examples:
American Psychological Association Official Website (APA)
The Chicago Manual of Style Online
The American Medical Association
From The Purdue Online Writing Lab (OWL):