Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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