APA (7th ed.) Citation

Walker, T. D., & Davis, D. A. (1990). Plan Graphics. Van Nostrand Reinhold.

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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

Warning: These citations may not always be 100% accurate.