Citazione Stile APA (7a Edizione)

Mellgren, L., Walker, M., & Upshur, J. A. (1973). New horizons in english: Workbook 2. Addison-Wesley Publishing Company.

Citazione stile Chigago Style (17a edizione)

Mellgren, Lars, Michael Walker, e John A. Upshur. New Horizons in English: Workbook 2. Massachusetts, EUA: Addison-Wesley Publishing Company, 1973.

Citatione MLA (9a ed.)

Mellgren, Lars, et al. New Horizons in English: Workbook 2. Addison-Wesley Publishing Company, 1973.