Tohutoro APA (7th ed.)
Leedy, P. D. (1992). Practical research: Planning and design (5th ed.). Prentice Hall.
Tohutoru Kātū Chicago (17th ed.)
Leedy, Paul D. Practical Research: Planning and Design. 5th ed. New Jersey: Prentice Hall, 1992.
Tohutoro MLA (9th ed.)
Leedy, Paul D. Practical Research: Planning and Design. 5th ed. Prentice Hall, 1992.
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