Style de citation APA (7e éd.)

Ferree, T., & Sanabria, K. (1998). NorthStar: Focus on listening and speaking, high intermediate. Longman.

Style de citation Chicago (17e éd.)

Ferree, Tess, et Kim Sanabria. NorthStar: Focus on Listening and Speaking, High Intermediate. Nueva York: Longman, 1998.

Style de citation MLA (9e éd.)

Ferree, Tess, et Kim Sanabria. NorthStar: Focus on Listening and Speaking, High Intermediate. Longman, 1998.

Attention : ces citations peuvent ne pas être correctes à 100%.