Cita APA (7a ed.)

Nelsen, O. E. (1953). Comparative embryology of the vertebrates. McGraw-Hill.

Cita Chicago Style (17a ed.)

Nelsen, Olin E. Comparative Embryology of the Vertebrates. New York: McGraw-Hill, 1953.

Cita MLA (9a ed.)

Nelsen, Olin E. Comparative Embryology of the Vertebrates. McGraw-Hill, 1953.