Cita APA (7a ed.)

Spilsbury, L. (2008). Digestion and excretion. Heinemann Library.

Cita Chicago Style (17a ed.)

Spilsbury, Louise. Digestion and Excretion. Chicago: Heinemann Library, 2008.

Cita MLA (8a ed.)

Spilsbury, Louise. Digestion and Excretion. Heinemann Library, 2008.

Precaución: Estas citas no son 100% exactas.