Cita APA (7a ed.)

Clymer, T., & Bessell-Browne, T. (1986). At the zoo (1. publ. 1976, repr.). Longman Cheshire.

Cita Chicago Style (17a ed.)

Clymer, Theodore, y Thelma Bessell-Browne. At the Zoo. 1. publ. 1976, repr. Melbourne: Longman Cheshire, 1986.

Cita MLA (9a ed.)

Clymer, Theodore, y Thelma Bessell-Browne. At the Zoo. 1. publ. 1976, repr. Longman Cheshire, 1986.