Practical Research: Planning and Design 12th Edition is written by Paul D. Leedy; Jeanne Ellis Ormrod and published by Pearson.ISBNs for Practical Research: Planning and Design are 9780134776248, 0134776240 and 9780134775654, 0134775651. Additional ISBNs for this book include 9781003011194, 9781292339283, 9780134776200.