APA (7th ed.) Citation

Guptill, A. L., & Meyer, S. E. (1967). Watercolor painting, step-by-step (2d ed.). Watson-Guptill Publications.

Chicago Style (17th ed.) Citation

Guptill, Arthur L., and Susan E. Meyer. Watercolor Painting, Step-by-step. 2d ed. New York: Watson-Guptill Publications, 1967.

MLA (9th ed.) Citation

Guptill, Arthur L., and Susan E. Meyer. Watercolor Painting, Step-by-step. 2d ed. Watson-Guptill Publications, 1967.