APA (7th ed.) Citation

Auden, W. H., & Isherwood, C. (1938). On the frontier: A melodrama in three acts. Random House.

Chicago Style (17th ed.) Citation

Auden, W. H., and Christopher Isherwood. On the Frontier: A Melodrama in Three Acts. New York: Random House, 1938.

MLA (9th ed.) Citation

Auden, W. H., and Christopher Isherwood. On the Frontier: A Melodrama in Three Acts. Random House, 1938.