APA (7th ed.) Citation

Horgan, P. (1940). Figures in a landscape (2nd ed.). Harper.

Chicago Style (17th ed.) Citation

Horgan, Paul. Figures in a Landscape. 2nd ed. New York, London: Harper, 1940.

MLA (9th ed.) Citation

Horgan, Paul. Figures in a Landscape. 2nd ed. Harper, 1940.