Cita APA (7a ed.)

Ockenden, M., & Booker, M. (1979). Situational Dialogues (1st. ed., new impression.). Longman.

Cita Chicago Style (17a ed.)

Ockenden, Michael, y Malcolm Booker. Situational Dialogues. 1st. ed., new impression. London: Longman, 1979.

Cita MLA (9a ed.)

Ockenden, Michael, y Malcolm Booker. Situational Dialogues. 1st. ed., new impression. Longman, 1979.