APA (7th ed.) Citation

Steinbeck, Paine, & Galsworthy. (1976). The red pony. Heinemann Educational Books.

Chicago Style (17th ed.) Citation

Steinbeck, Paine, and Galsworthy. The Red Pony. London: Heinemann Educational Books, 1976.

MLA (8th ed.) Citation

Steinbeck, et al. The Red Pony. Heinemann Educational Books, 1976.