APA (7th ed.) Citation

Haas, R., Blohm, H., & Blohm, H. (1989). Egg-carton zoo II. Oxford University Press.

Chicago Style (17th ed.) Citation

Haas, Rudi, Hans Blohm, and Heike Blohm. Egg-carton Zoo II. Don Mills, Ont.: Oxford University Press, 1989.

MLA (9th ed.) Citation

Haas, Rudi, et al. Egg-carton Zoo II. Oxford University Press, 1989.