Citazione Stile APA (7a Edizione)

Carkhuff, R. R. (1976). The skills of teaching: Interpersonal skills. Human Resorces Development..

Citazione stile Chigago Style (17a edizione)

Carkhuff, Robert R. The Skills of Teaching: Interpersonal Skills. Massachuusetts: Human Resorces Development., 1976.

Citatione MLA (9a ed.)

Carkhuff, Robert R. The Skills of Teaching: Interpersonal Skills. Human Resorces Development., 1976.