Cita APA (7a ed.)

Mann, W. M. (1930). Wild Animals in and out of the Zoo. Smith, scient series.

Cita Chicago Style (17a ed.)

Mann, William M. Wild Animals in and Out of the Zoo. New York: Smith, scient series, 1930.

Cita MLA (9a ed.)

Mann, William M. Wild Animals in and Out of the Zoo. Smith, scient series, 1930.