Practical research :
Leedy, Paul D.
Practical research : planning and design. - 8th ed. / Paul D. Leedy and Jeanne Ellis Ormrod. - Upper Saddle River, N.J. : Pearson/Merrill Prentice Hall, c2005. - xxiii, 319 p. : ill. ; 28 cm.
Bibliography.
0131108956 9780131247208 0131247204
Research
Practical research : planning and design. - 8th ed. / Paul D. Leedy and Jeanne Ellis Ormrod. - Upper Saddle River, N.J. : Pearson/Merrill Prentice Hall, c2005. - xxiii, 319 p. : ill. ; 28 cm.
Bibliography.
0131108956 9780131247208 0131247204
Research