Kozma, R. B., Kulik, J. A., & Smith, B. B. (1977). Guide for P.S.I. proctors. Center for Research on Learning and Teaching, University of Michigan.
Citace podle Chicago (17th ed.)Kozma, Robert B., James A. Kulik, a Beverly B. Smith. Guide for P.S.I. Proctors. Ann Arbor, Michigan: Center for Research on Learning and Teaching, University of Michigan, 1977.
Citace podle MLA (8th ed.)Kozma, Robert B., et al. Guide for P.S.I. Proctors. Center for Research on Learning and Teaching, University of Michigan, 1977.
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