APA (7th ed.) Citation

Lobel, A. (1970). Frog and toad are friends. Harper, an imprint of HarperCollins Publishers.

Chicago Style (17th ed.) Citation

Lobel, Arnold. Frog and Toad Are Friends. New York: Harper, an imprint of HarperCollins Publishers, 1970.

MLA (9th ed.) Citation

Lobel, Arnold. Frog and Toad Are Friends. Harper, an imprint of HarperCollins Publishers, 1970.

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