Cita APA (7a ed.)

English Language Services. (1967). The silver elephant. Collier-Macmillan.

Cita Chicago Style (17a ed.)

English Language Services. The Silver Elephant. London: Collier-Macmillan, 1967.

Cita MLA (9a ed.)

English Language Services. The Silver Elephant. Collier-Macmillan, 1967.