Practical research : 

Leedy, Paul D.

Practical research :  planning and design / Paul D. Leedy, Jeanne Ellis Ormrod. - 12th ed. -  NY, NY :  Pearson, 2019. -  xx, 441 p. : ill. ; 27.5 cm.

Includes bibliographical references and index.

9780134775654


Research --Methodology.

 001.4 LEE
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