APA (7th ed.) Citation

Walker, T. D. (1977). Plan graphics: Drawing, delineation, lettering (2nd edition.). PDA Publishers.

Chicago Style (17th ed.) Citation

Walker, Theodore D. Plan Graphics: Drawing, Delineation, Lettering. 2nd edition. West Lafayette: PDA Publishers, 1977.

MLA (8th ed.) Citation

Walker, Theodore D. Plan Graphics: Drawing, Delineation, Lettering. 2nd edition. PDA Publishers, 1977.

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