Cita APA (7th ed.)
Speed, F. M. (1966). General Biology. Charles E. Merrill Books, Inc..
Cita Chicago (17th ed.)
Speed, Fred M. General Biology. Ohio: Charles E. Merrill Books, Inc., 1966.
Cita MLA (9th ed.)
Speed, Fred M. General Biology. Charles E. Merrill Books, Inc., 1966.
Atenció: Aquestes cites poden no estar 100% correctes.