APA (7th ed.) Citation

Gumb, R. D. (1979). Evolving theories. Haven Pub..

Chicago Style (17th ed.) Citation

Gumb, Raymond D. Evolving Theories. Flushing, N.Y.: Haven Pub., 1979.

MLA (9th ed.) Citation

Gumb, Raymond D. Evolving Theories. Haven Pub., 1979.

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