APA is the most common style that you will use in your kinesiology classes, but when in doubt, always check with your professor. The OWL at Purdue has an excellent APA guide that you can use online. If you prefer to use a book, you can use the Publication Manual of the American Psychological Association in the library (a copy is available in the reference collection at Research Help).
What is plagiarism? How can you avoid it?
For information, practical tips, and resources check out the Academic Integrity Guide.
Give credit where credit is due. By properly citing the sources you use in your research projects you are both identifying the resources that you used to complete your work and you are formally acknowledging the authors or creators of those resources.
You'll find many references in the course of your research. Make sure you keep track of what you find! Citation Management Systems are excellent tools to organize your references.
A Manual for Writers of Research Papers, Theses, and Dissertations, Eighth Edition by 
MLA Handbook by 
Publication Manual of the American Psychological Association by 
The Chicago Manual of Style by