Practical research :
Leedy, Paul D.
Practical research : planning and design / Paul D. Leedy, Jeanne Ellis Ormrod. - Ninth Edition - Upper Saddle River, NJ : Merrill, c2010. - xvii, 336 pages : illustrations, maps ; 28 cm.
Includes bibliographical references and index.
978-13-136566-7
Research --Methodology.
DC 001.4 / L51
Practical research : planning and design / Paul D. Leedy, Jeanne Ellis Ormrod. - Ninth Edition - Upper Saddle River, NJ : Merrill, c2010. - xvii, 336 pages : illustrations, maps ; 28 cm.
Includes bibliographical references and index.
978-13-136566-7
Research --Methodology.
DC 001.4 / L51