Cita APA (7th ed.)

Davis, D. A., & Walker, T. D. (2000). Plan graphics (5th ed.). Wiley.

Cita Chicago (17th ed.)

Davis, David A., i Theodore D. Walker. Plan Graphics. 5th ed. New York, N.Y: Wiley, 2000.

Cita MLA (9th ed.)

Davis, David A., i Theodore D. Walker. Plan Graphics. 5th ed. Wiley, 2000.