APA (7e ed.) Bronvermelding
Chang, V. N., Decker, C. L., & Scott, S. T. (2009). Developing helping skills: A step-by-step approach. Brooks/Cole Cengage Learning.
Chicago (17e ed.) Bronvermelding
Chang, Valerie Nash, Carol L. Decker, en Sheryn Thompson Scott. Developing Helping Skills: A Step-by-step Approach. Belmont, CA: Brooks/Cole Cengage Learning, 2009.
MLA (9e ed.) Bronvermelding
Chang, Valerie Nash, et al. Developing Helping Skills: A Step-by-step Approach. Brooks/Cole Cengage Learning, 2009.
Let op: Deze citaties zijn niet altijd 100% accuraat.