Creswell, John W.
Educational research : planning, conducting, and evaluating quantitative and
qualitative research / John W. Creswell. — 4th ed.
p. cm.
Includes bibliographical references and index.
ISBN-13: 978-0-13-136739-5 (alk. paper)
ISBN-10: 0-13-136739-0 (alk. paper)
1. Education—Research—Methodology. I. Title.
LB1028.C742 2012
370.72—dc22
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