TY - BOOK AU - Leedy,Paul D. AU - Ormrod,Jeanne Ellis TI - Practical research: planning and design SN - 0131108956 U1 - 300.72 LEE PY - 2005/// CY - Upper Saddle River, N.J. PB - Prentice Hall KW - Research N1 - Includes bibliographical references (p. 309-311) and index ER -