Leedy, Paul D.
Practical research : planning and design Paul D. Leedy and Jeanne Ellis Ormrod - 11th ed. - Boston: Pearson, 2015. - 407p.
Eng
9781292095875
Research Methodology
001.4 / LEP
Practical research : planning and design Paul D. Leedy and Jeanne Ellis Ormrod - 11th ed. - Boston: Pearson, 2015. - 407p.
Eng
9781292095875
Research Methodology
001.4 / LEP