Gaya APA

EDUCATIONAL RESEARCH (PLANNING, CONDUCTING AND EVALUATING QUANTITATIVE AND QUALITATIVE RESEARCH). (2012). : Library of Congress Cataloging-in Publication Data.

Gaya MLA

EDUCATIONAL RESEARCH (PLANNING, CONDUCTING AND EVALUATING QUANTITATIVE AND QUALITATIVE RESEARCH). Ed.4. : Library of Congress Cataloging-in Publication Data, 2012. Text.