APA Style

Krawczyk, M, ;, N, J. (2007). Game Development Essentials : Game Story & Character Development . United States of America: Cengage Learning.

MLA Style

Krawczyk, Marianne, ;, Novak,, Jeannie. "Game Development Essentials : Game Story & Character Development". United States of America: Cengage Learning, 2007. Text.