Cita APA (7th ed.)

MacLean, A. C. (1981). Start listening. Study guide. Longman.

Cita Chicago (17th ed.)

MacLean, Alan Campbell. Start Listening. Study Guide. Londres: Longman, 1981.

Cita MLA (9th ed.)

MacLean, Alan Campbell. Start Listening. Study Guide. Longman, 1981.