APA Style

Willson, Mary F. (1984). Vertebrate Natural History . AMERICA: Saunders College Publishing.

Chicago Style

Willson, Mary F. Vertebrate Natural History. AMERICA: Saunders College Publishing, 1984. Text.

MLA Style

Willson, Mary F. Vertebrate Natural History. AMERICA: Saunders College Publishing, 1984. Text.

Turabian Style

Willson, Mary F. Vertebrate Natural History. AMERICA: Saunders College Publishing, 1984. Print.