Cita APA (7th ed.)

Williams, E. B., & Pessoa, M. (1977). Conversational Brazilian-Portuguese: Intended for self-study and for use in schools (4th ed., completely rev.). R. D. Cortina Co. exclusive distributors to the book trade, Doubleday.

Cita Chicago (17th ed.)

Williams, Edwin Bucher, i Marialice Pessoa. Conversational Brazilian-Portuguese: Intended for Self-study and for Use in Schools. 4th ed., completely rev. New York, Garden City, N.Y: R. D. Cortina Co. exclusive distributors to the book trade, Doubleday, 1977.

Cita MLA (9th ed.)

Williams, Edwin Bucher, i Marialice Pessoa. Conversational Brazilian-Portuguese: Intended for Self-study and for Use in Schools. 4th ed., completely rev. R. D. Cortina Co. exclusive distributors to the book trade, Doubleday, 1977.