APA (7th ed.) Citation

Mackail, D. (1943). Upside down, or: Love among the ruins. Hutchinson.

Chicago Style (17th ed.) Citation

Mackail, Denis. Upside Down, or: Love Among the Ruins. London: Hutchinson, 1943.

MLA (8th ed.) Citation

Mackail, Denis. Upside Down, or: Love Among the Ruins. Hutchinson, 1943.