Gaya APA

W., C, ,, J. (2012). Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative Research (Trawas) . New York: Library of Congress Cataloging-in-Publication Data.

Gaya MLA

W., Creswell, ,, John. "Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative Research (Trawas)". New York: Library of Congress Cataloging-in-Publication Data, 2012. Text.