Creswell, J. W. (2011). Designing and conducting mixed methods research. London: Sage.
Dyfyniad Arddull ChicagoCreswell, John W. Designing and Conducting Mixed Methods Research. London: Sage, 2011.
Dyfyniad MLACreswell, John W. Designing and Conducting Mixed Methods Research. London: Sage, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.