APA aipamena

Leedy, P. D. (2015). Practical research: Planning and design. Harlow, Essex: Pearson Education.

Chicago Style aipamena

Leedy, Paul D. Practical Research: Planning and Design. Harlow, Essex: Pearson Education, 2015.

MLA aipamena

Leedy, Paul D. Practical Research: Planning and Design. Harlow, Essex: Pearson Education, 2015.

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