APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.