APA (7th ed.) Citation

Velthuijs, M. (1998). Frog is frog (1. paperback ed.). Andersen Press.

Chicago Style (17th ed.) Citation

Velthuijs, Max. Frog Is Frog. 1. paperback ed. London: Andersen Press, 1998.

MLA (9th ed.) Citation

Velthuijs, Max. Frog Is Frog. 1. paperback ed. Andersen Press, 1998.

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