Citazione Stile APA (7a Edizione)

English, A. K., & English, L. M. (1998). NorthStar: Focus on reading and writing, high intermediate. Longman.

Citazione stile Chigago Style (17a edizione)

English, Andrew K., e Laura Monahon English. NorthStar: Focus on Reading and Writing, High Intermediate. Nueva York: Longman, 1998.

Citatione MLA (9a ed.)

English, Andrew K., e Laura Monahon English. NorthStar: Focus on Reading and Writing, High Intermediate. Longman, 1998.