Young, M. E. (2009). Learning the art of helping: Building blocks and techniques (4th ed.). Merrill/Pearson.
芝加哥风格引文Young, Mark E. Learning the Art of Helping: Building Blocks and Techniques. 4th ed. Upper Saddle River, N.J: Merrill/Pearson, 2009.
MLA引文Young, Mark E. Learning the Art of Helping: Building Blocks and Techniques. 4th ed. Merrill/Pearson, 2009.
警告：这些引文格式不一定是100％准确.