APA (7th ed.) Citation

Strandberg, O., Hassner, R., & Michael, M. A. (1956). Jambo! (1. publ.). Joseph.

Chicago Style (17th ed.) Citation

Strandberg, Olle, Rune Hassner, and Maurice Albert Michael. Jambo! 1. publ. London: Joseph, 1956.

MLA (9th ed.) Citation

Strandberg, Olle, et al. Jambo! 1. publ. Joseph, 1956.