APA (7th ed.) Citation

Udry, J. M., & Simont, M. (1984). A tree is nice. HarperCollins Publishers.

Chicago Style (17th ed.) Citation

Udry, Janice May, and Marc Simont. A Tree Is Nice. New York: HarperCollins Publishers, 1984.

MLA (8th ed.) Citation

Udry, Janice May, and Marc Simont. A Tree Is Nice. HarperCollins Publishers, 1984.

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