Purves/Orians. (1987). The Science Of Biology. Sinauer Association Inc.
Cita Chicago Style (17a ed.)Purves/Orians. The Science Of Biology. Sinauer Association Inc, 1987.
Cita MLA (8a ed.)Purves/Orians. The Science Of Biology. Sinauer Association Inc, 1987.
Precaución: Estas citas no son 100% exactas.