APA (7th ed.) Citation

Hill, T. (1979). The watercolor painter's problem book. Watson-Guptill ;.

Chicago Style (17th ed.) Citation

Hill, Tom. The Watercolor Painter's Problem Book. New York ; London: Watson-Guptill ;, 1979.

MLA (9th ed.) Citation

Hill, Tom. The Watercolor Painter's Problem Book. Watson-Guptill ;, 1979.

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