Cita APA

Greiffenberg, F., & Greiffenberg, F. (1977). English workshop: Second course. New York, New York: Harcourt Brace Jovanovich.

Citación estilo Chicago

Greiffenberg, Fay, y Fay Greiffenberg. English Workshop: Second Course. New York, New York: Harcourt Brace Jovanovich, 1977.

Cita MLA

Greiffenberg, Fay, y Fay Greiffenberg. English Workshop: Second Course. New York, New York: Harcourt Brace Jovanovich, 1977.