Cita APA (7a ed.)
McCord, W. Biology for Beginners. Writers and Readers.
Cita estilo Chicago (17a ed.)
McCord, Wilson. Biology for Beginners. Nueva York, EUA: Writers and Readers.
Cita MLA (9a ed.)
McCord, Wilson. Biology for Beginners. Writers and Readers.
Precaución: Estas citas no son 100% exactas.