Citazione APA

London, J., & Remkiewicz, F. (1995). Froggy learns to swim. Viking.

Stile di citazione Chicago

London, Jonathan, e Frank Remkiewicz. Froggy Learns to Swim. New York: Viking, 1995.

Citazione MLA

London, Jonathan, e Frank Remkiewicz. Froggy Learns to Swim. Viking, 1995.