APA (7th ed.) Citation

Thorn, A., & Smith, E. (2014). Game development principles. Cengage Learning PTR.

Chicago Style (17th ed.) Citation

Thorn, Alan, and Emi Smith. Game Development Principles. Boston: Cengage Learning PTR, 2014.

MLA (9th ed.) Citation

Thorn, Alan, and Emi Smith. Game Development Principles. Cengage Learning PTR, 2014.