Dyfyniad APA

Cresswell, J. W. (2015). Research Design: Pendekatan kualitatif, kuantitatif, dan mixed. Pustaka Pelajar.

Dyfyniad Arddull Chicago

Cresswell, John W. Research Design: Pendekatan Kualitatif, Kuantitatif, Dan Mixed. Pustaka Pelajar, 2015.

Dyfyniad MLA

Cresswell, John W. Research Design: Pendekatan Kualitatif, Kuantitatif, Dan Mixed. Pustaka Pelajar, 2015.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.