Alfred Sherwood Romer, T. S. P. The vertebrate body. Saunders College Publishing.
Cita Chicago Style (17a ed.)Alfred Sherwood Romer, Thomas S. Parsons. The Vertebrate Body. Saunders College Publishing.
Cita MLA (8a ed.)Alfred Sherwood Romer, Thomas S. Parsons. The Vertebrate Body. Saunders College Publishing.
Precaución: Estas citas no son 100% exactas.