APA (7th ed.) Citation

Mellgren, L., & Walker, M. (1973). New horizon in english. Book 1. Addison-Wesley.

Chicago Style (17th ed.) Citation

Mellgren, Lars, and Michael Walker. New Horizon in English. Book 1. Addison-Wesley, 1973.

MLA (8th ed.) Citation

Mellgren, Lars, and Michael Walker. New Horizon in English. Book 1. Addison-Wesley, 1973.

Warning: These citations may not always be 100% accurate.