APA način citiranja

Koen, B. V., & Billy Vaughn Koen. (2003). Discussion of the method: Conducting the engineer's approach to problem solving. New York: Oxford University Press.

Čikaški stil citiranja

Koen, Billy Vaughn, i Billy Vaughn Koen. Discussion of the Method: Conducting the Engineer's Approach to Problem Solving. New York: Oxford University Press, 2003.

MLA način citiranja

Koen, Billy Vaughn, i Billy Vaughn Koen. Discussion of the Method: Conducting the Engineer's Approach to Problem Solving. New York: Oxford University Press, 2003.