Citazione Stile APA (7a Edizione)

Young, M. E. (2009). Learning the art of helping: Building blocks and techniques (4th ed.). Merrill/Pearson.

Citazione stile Chigago Style (17a edizione)

Young, Mark E. Learning the Art of Helping: Building Blocks and Techniques. 4th ed. Upper Saddle River, N.J: Merrill/Pearson, 2009.

Citatione MLA (9a ed.)

Young, Mark E. Learning the Art of Helping: Building Blocks and Techniques. 4th ed. Merrill/Pearson, 2009.