APA (7th ed.) Citation

Richmond, L., & Littlejohns, J. (1930). The technique of water-colour painting. Pitman & Sons.

Chicago Style (17th ed.) Citation

Richmond, Leonard, and J. Littlejohns. The Technique of Water-colour Painting. London: Pitman & Sons, 1930.

MLA (9th ed.) Citation

Richmond, Leonard, and J. Littlejohns. The Technique of Water-colour Painting. Pitman & Sons, 1930.

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