APA (7th ed.) Citation

Nelsen, O. E. (1953). Comparative embryology of the vertebrates: With 2057 drawings and photos. grouped as 380 illus. Blakiston.

Chicago Style (17th ed.) Citation

Nelsen, Olin Everett. Comparative Embryology of the Vertebrates: With 2057 Drawings and Photos. Grouped as 380 Illus. New York: Blakiston, 1953.

MLA (9th ed.) Citation

Nelsen, Olin Everett. Comparative Embryology of the Vertebrates: With 2057 Drawings and Photos. Grouped as 380 Illus. Blakiston, 1953.