APA (7th ed.) Citation

Auden, W. H., & Isherwood, C. (1958). The ascent of F.6 (and) On the frontier / by W.H. Auden and Christopher Isherwood. Faber.

Chicago Style (17th ed.) Citation

Auden, W. H., and Christopher Isherwood. The Ascent of F.6 (and) On the Frontier / by W.H. Auden and Christopher Isherwood. London: Faber, 1958.

MLA (9th ed.) Citation

Auden, W. H., and Christopher Isherwood. The Ascent of F.6 (and) On the Frontier / by W.H. Auden and Christopher Isherwood. Faber, 1958.

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