APA (7th ed.) Citation

Gaff, S. S., Festa, C., & Gaff, J. G. (1978). Professional development: A guide to resources. Change Magazine Press.

Chicago Style (17th ed.) Citation

Gaff, Sally Shake, Conrad Festa, and Jerry G. Gaff. Professional Development: A Guide to Resources. [New Rochelle, N.Y.]: Change Magazine Press, 1978.

MLA (9th ed.) Citation

Gaff, Sally Shake, et al. Professional Development: A Guide to Resources. Change Magazine Press, 1978.