Cita APA (7th ed.)

Boyd, F., Quinn, D., & Keillor, G. (1990). Stories from lake Wobegon: Advanced listening and conversation skills. Longman.

Cita Chicago (17th ed.)

Boyd, Frances, David Quinn, i Garrison Keillor. Stories from Lake Wobegon: Advanced Listening and Conversation Skills. Nueva York: Longman, 1990.

Cita MLA (9th ed.)

Boyd, Frances, et al. Stories from Lake Wobegon: Advanced Listening and Conversation Skills. Longman, 1990.