Cita APA (7a ed.)
Carkhuff, R. (1979). The skills of helping: An introduction to counselling skills. Human Technology.
Cita Chicago Style (17a ed.)
Carkhuff, Robert. The Skills of Helping: An Introduction to Counselling Skills. Massachussets: Human Technology, 1979.
Cita MLA (9a ed.)
Carkhuff, Robert. The Skills of Helping: An Introduction to Counselling Skills. Human Technology, 1979.
Precaución: Estas citas no son 100% exactas.