APA (7th ed.) Citation

Kafka, F., Heller, E., Born, J., & Bauer, F. (1974). Letters to Felice. Secker and Warburg.

Chicago Style (17th ed.) Citation

Kafka, Franz, Erich Heller, Jurgen Born, and Felice Bauer. Letters to Felice. London: Secker and Warburg, 1974.

MLA (8th ed.) Citation

Kafka, Franz, et al. Letters to Felice. Secker and Warburg, 1974.