APA-čujuhus (7. p.)

Fraenkel, J. R., & Wallen, N. E. (2009). How to design and evaluate research in education (7th ed.). McGraw-Hill.

Chicago-čujuhus (17. p.)

Fraenkel, Jack R., juo Norman E. Wallen. How to Design and Evaluate Research in Education. 7th ed. Boston: McGraw-Hill, 2009.

MLA-čujuhus (9. p.)

Fraenkel, Jack R., juo Norman E. Wallen. How to Design and Evaluate Research in Education. 7th ed. McGraw-Hill, 2009.

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