Shefler, W. C. (1976). Biology: Principles and issues. Addison-Wesley.
Chicago Style (17th ed.) CitationShefler, William C. Biology: Principles and Issues. Reading, MA: Addison-Wesley, 1976.
MLA (9th ed.) CitationShefler, William C. Biology: Principles and Issues. Addison-Wesley, 1976.
Warning: These citations may not always be 100% accurate.