bibliography is a list of the sources an author used when writing
a book, article or essay. It is found at the end of written works.
Bibliographies point to more sources about the topic.
By the way, don't confuse bibliography with biography (information about a person's life)!
Brief Sample Bibliography (MLA Style)
Randall, John E., Gerald R. Allen, and Roger C. Steene. Fishes of the Great Barrier Reef and Coral Sea. Honolulu: U of Hawaii P, 1997.
Scott, Susan. Exploring Hanauma Bay. Honolulu: U of Hawaii P, 1993. Castro, Peter, and Michael E. Huber. Marine Biology. 4th ed. Boston: McGraw-Hill, 2003.