Cita APA (7th ed.)

Clemmons, W. P., & Hester, H. (1974). Growth through groups. Broadman Press.

Cita Chicago (17th ed.)

Clemmons, William P., i Harvey Hester. Growth Through Groups. Nashville: Broadman Press, 1974.

Cita MLA (9th ed.)

Clemmons, William P., i Harvey Hester. Growth Through Groups. Broadman Press, 1974.