It is extremely important to cite ALL references to uphold academic integrity and avoid plagiarism. The University of Waterloo has provided the following resources for your information:
Create your own personal database by importing references from online research databases, text files, and a variety of other sources. You can use these references in writing papers and automatically format the paper and the bibliography in seconds.
There are a variety of citation styles available and you should check with your professor as to which one to use.