Cita APA

Bullough, W. S., & Bullough, W. S. (1963). Vertebrate reproductive cycles (2. edition.). New York, New York: Willey.

Citación estilo Chicago

Bullough, William Sydney, y William Sydney Bullough. Vertebrate Reproductive Cycles. 2. edition. New York, New York: Willey, 1963.

Cita MLA

Bullough, William Sydney, y William Sydney Bullough. Vertebrate Reproductive Cycles. 2. edition. New York, New York: Willey, 1963.