APA aipamena

Walker, T. D., & Davis, D. A. (1990). Plan graphics (Fourth edition.). Van Nostrand Reinhold.

Chicago Style aipamena

Walker, Theodore D., and David A. Davis. Plan Graphics. Fourth edition. New York: Van Nostrand Reinhold, 1990.

MLA aipamena

Walker, Theodore D., and David A. Davis. Plan Graphics. Fourth edition. Van Nostrand Reinhold, 1990.