APA (7th ed.) Citation

Callender, W. D., Jr, Vishneau, M. A., & Nelson, K. D. (1990). The Joy of learning. University of Southern Maine.

Chicago Style (17th ed.) Citation

Callender, Willard D., Jr, Margaret A. Vishneau, and Kelly D. Nelson. The Joy of Learning. Portland, Maine: University of Southern Maine, 1990.

MLA (9th ed.) Citation

Callender, Willard D., Jr, et al. The Joy of Learning. University of Southern Maine, 1990.