Cita APA (7a ed.)

Roberts, P. (1956). Teacher´s guide to Patterns of English. Harcourt, Brace & World.

Cita Chicago Style (17a ed.)

Roberts, Paul. Teacher´s Guide to Patterns of English. New York: Harcourt, Brace & World, 1956.

Cita MLA (8a ed.)

Roberts, Paul. Teacher´s Guide to Patterns of English. Harcourt, Brace & World, 1956.