Cita APA (7th ed.)

Young, M. E. (2001). Learning the art of helping: Building blocks and techniques (2nd ed.). Prentice Hall.

Cita Chicago (17th ed.)

Young, Mark E. Learning the Art of Helping: Building Blocks and Techniques. 2nd ed. Upper Saddle River, New Jersey: Prentice Hall, 2001.

Cita MLA (9th ed.)

Young, Mark E. Learning the Art of Helping: Building Blocks and Techniques. 2nd ed. Prentice Hall, 2001.