APA-čujuhus (7. p.)

Mitchell, M., & Jolley, J. (1988). Research design explained. Holt, Reinehart and Winston.

Chicago-čujuhus (17. p.)

Mitchell, Mark, juo Janina Jolley. Research Design Explained. New York: Holt, Reinehart and Winston, 1988.

MLA-čujuhus (9. p.)

Mitchell, Mark, juo Janina Jolley. Research Design Explained. Holt, Reinehart and Winston, 1988.

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