Research design :

Creswell, John W.

Research design : qualitative, quantitative, and mixed methods approaches / John W. Creswell. - 3rd ed. - Thousand Oaks, Calif. : Sage Publications, c2009. - xxix, 260 p. : ill. ; 26 cm.

Includes bibliographical references (p. 237-245) and indexes.

9781412965569 (cloth) 9788132107484 (PB) 141296556X (cloth) 9781412965576 (pbk.) 1412965578 (pbk.)

2008006242

300.72