Cita APA (7th ed.)

Stieglitz, F. (1970). Progressive audio lingual drills in english. A Regents Publications.

Cita Chicago (17th ed.)

Stieglitz, Francine. Progressive Audio Lingual Drills in English. New York: A Regents Publications, 1970.

Cita MLA (9th ed.)

Stieglitz, Francine. Progressive Audio Lingual Drills in English. A Regents Publications, 1970.