Cita APA

Ferree, T., & Sanabria, K. 1. (1998). NorthStar: Focus on listening and speaking, high intermediate. New York, New York: Longman.

Citación estilo Chicago

Ferree, Tess, y Kim 1955- Sanabria. NorthStar: Focus On Listening and Speaking, High Intermediate. New York, New York: Longman, 1998.

Cita MLA

Ferree, Tess, y Kim 1955- Sanabria. NorthStar: Focus On Listening and Speaking, High Intermediate. New York, New York: Longman, 1998.