APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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