APA (7th ed.) Citation

Mackail, D. G. (1931). The Square circle. Houghton Mifflin company.

Chicago Style (17th ed.) Citation

Mackail, Denis George. The Square Circle. Boston and New York: Houghton Mifflin company, 1931.

MLA (9th ed.) Citation

Mackail, Denis George. The Square Circle. Houghton Mifflin company, 1931.