APA (7th ed.) Citation

Milne, A. A., & Shepard, E. H. (1992). When we were very young. Methuen Children's Books.

Chicago Style (17th ed.) Citation

Milne, A. A., and Ernest H. Shepard. When We Were Very Young. London: Methuen Children's Books, 1992.

MLA (9th ed.) Citation

Milne, A. A., and Ernest H. Shepard. When We Were Very Young. Methuen Children's Books, 1992.