Cita APA (7th ed.)
Chang, V. N., Decker, C. L., & Scott, S. T. (2009). Developing helping skills: A step-by-step approach. Brooks/Cole Cengage Learning.
Cita Chicago (17th ed.)
Chang, Valerie Nash, Carol L. Decker, i Sheryn Thompson Scott. Developing Helping Skills: A Step-by-step Approach. Belmont, CA: Brooks/Cole Cengage Learning, 2009.
Cita MLA (9th ed.)
Chang, Valerie Nash, et al. Developing Helping Skills: A Step-by-step Approach. Brooks/Cole Cengage Learning, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.