APA (7th ed.) Citation

Welch, I. D., Tate, G. A., & Richards, F. (1978). Humanistic psychology: A source book. Prometheus Books.

Chicago Style (17th ed.) Citation

Welch, I. David, George A. Tate, and Fred Richards. Humanistic Psychology: A Source Book. Buffalo: Prometheus Books, 1978.

MLA (9th ed.) Citation

Welch, I. David, et al. Humanistic Psychology: A Source Book. Prometheus Books, 1978.