Wiersma, William. Research methods in education : an introduction / William Wiersma, Stephen G. Jurs. - 9th ed. - Boston : Pearson/Allyn and Bacon, c2009. - xvii, 493 p. : ill. ; 24 cm. + 1 CD-ROM (4 3/4 in.) Includes bibliographical references and index. ISBN: 9780205642403 (pbk. : Int'l ed.) 0205642403 (pbk. : Int'l ed.) Subjects--Topical Terms: Education--Research. Dewey Class. No.: 370.72 / WIE