Citace podle APA (7th ed.)
Heppner, P. P., Wampold, B. E., Owen, J., Wang, K. T., & Thompson, M. N. (2015). Research design in counseling. (Fourth Edition.). Cengage Learning.
Citace podle Chicago (17th ed.)
Heppner, P. Paul, Bruce E. Wampold, Jesse Owen, Kenneth T. Wang, a Mindi N. Thompson. Research Design in Counseling. Fourth Edition. Boston, MA: Cengage Learning, 2015.
Citace podle MLA (9th ed.)
Heppner, P. Paul, et al. Research Design in Counseling. Fourth Edition. Cengage Learning, 2015.
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