APA (7th ed.) Citation

Heap, K. (1977). Group theory for social workers: An introduction (First English edition.). Pergamon Press.

Chicago Style (17th ed.) Citation

Heap, Ken. Group Theory for Social Workers: An Introduction. First English edition. Oxford ; New York: Pergamon Press, 1977.

MLA (8th ed.) Citation

Heap, Ken. Group Theory for Social Workers: An Introduction. First English edition. Pergamon Press, 1977.

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