Cita APA

Mills, R., & Frazier, L. L. 1. (2004). NorthStar: Listening and speaking : basic/low intermediate (2. edition.). White Plains, N.Y.: Longman.

Citación estilo Chicago

Mills, Robin, y Laurie Leach 1965- Frazier. NorthStar: Listening and Speaking : Basic/low Intermediate. 2. edition. White Plains, N.Y.: Longman, 2004.

Cita MLA

Mills, Robin, y Laurie Leach 1965- Frazier. NorthStar: Listening and Speaking : Basic/low Intermediate. 2. edition. White Plains, N.Y.: Longman, 2004.