APA (7th ed.) Citation

Guptill, A. L. (1965). Oil painting: Step by step. Watson-Guptill Publications.

Chicago Style (17th ed.) Citation

Guptill, Arthur L. Oil Painting: Step by Step. New York: Watson-Guptill Publications, 1965.

MLA (9th ed.) Citation

Guptill, Arthur L. Oil Painting: Step by Step. Watson-Guptill Publications, 1965.