Cita APA (7th ed.)

TRAVERS, R. M. (1982). Essentials of learning.-- ed.5. Macmillan.

Cita Chicago (17th ed.)

TRAVERS, Robert MW. Essentials of Learning.-- Ed.5. New York: Macmillan, 1982.

Cita MLA (9th ed.)

TRAVERS, Robert MW. Essentials of Learning.-- Ed.5. Macmillan, 1982.