Avila, V. L. (1992). Biology: A human endeavor. Bookmark.
Chicago Style (17th ed.) CitationAvila, Vernon L. Biology: A Human Endeavor. California: Bookmark, 1992.
MLA (9th ed.) CitationAvila, Vernon L. Biology: A Human Endeavor. Bookmark, 1992.
Warning: These citations may not always be 100% accurate.