Citazione Stile APA (7a Edizione)

Mellgren, L., Walker, M., & Upshur, J. A. (1975). New horizons in English: Book 6. Addison Wesley Publishing Company.

Citazione stile Chigago Style (17a edizione)

Mellgren, Lars, Michael Walker, e John A. Upshur. New Horizons in English: Book 6. Reading: Addison Wesley Publishing Company, 1975.

Citatione MLA (9a ed.)

Mellgren, Lars, et al. New Horizons in English: Book 6. Addison Wesley Publishing Company, 1975.