Ary, D., Jacobs, L. C., & Razavieh, A. (1985). Introduction to research in education (3rd ed.). Holt, Rinehart, and Winston.
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Chicago-čujuhus (17. p.)
Ary, Donald, Lucy Cheser Jacobs, juo Asghar Razavieh. Introduction to Research in Education. 3rd ed. New York: Holt, Rinehart, and Winston, 1985.
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MLA-čujuhus (9. p.)
Ary, Donald, et al. Introduction to Research in Education. 3rd ed. Holt, Rinehart, and Winston, 1985.
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