APA-Zitierstil (7. Ausg.)

Solórzano, h. S., & Schmidt, J. P. L. (1998). NorthStar: Focus on listening and speaking, intermediate. Longman.

Chicago-Zitierstil (17. Ausg.)

Solórzano, helen S., und Jennifer P. L. Schmidt. NorthStar: Focus on Listening and Speaking, Intermediate. Nueva York: Longman, 1998.

MLA-Zitierstil (9. Ausg.)

Solórzano, helen S., und Jennifer P. L. Schmidt. NorthStar: Focus on Listening and Speaking, Intermediate. Longman, 1998.