Montagu, A. (1975). Darwin: Competition & cooperation. Greenwood.
Cita Chicago Style (17a ed.)Montagu, Ashley. Darwin: Competition & Cooperation. Westport (Connecticut): Greenwood, 1975.
Cita MLA (9a ed.)Montagu, Ashley. Darwin: Competition & Cooperation. Greenwood, 1975.
Precaución: Estas citas no son 100% exactas.