Cita APA

Sandra S. Gottfried. (1993). Biology today (With 777 illustrations). St. Louis, Missouri: Mosby.

Chicago Style Citation

Sandra S. Gottfried. Biology Today (With 777 Illustrations). St. Louis, Missouri: Mosby, 1993.

Cita MLA

Sandra S. Gottfried. Biology Today (With 777 Illustrations). St. Louis, Missouri: Mosby, 1993.

Atenció: Aquestes cites poden no estar 100% correctes.