Cita APA (7th ed.)
Kelly, M. G., & McGrath, J. C. (1975). Biology, evolution and adaptation to the environment. Houghton Mifflin Comp.
Cita Chicago (17th ed.)
Kelly, Mahlon G., i John C. McGrath. Biology, Evolution and Adaptation to the Environment. Boston [usw.]: Houghton Mifflin Comp, 1975.
Cita MLA (9th ed.)
Kelly, Mahlon G., i John C. McGrath. Biology, Evolution and Adaptation to the Environment. Houghton Mifflin Comp, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.