Dyfyniad APA

Dunn, W. (2013). Understanding human development. Pearson Education.

Dyfyniad Arddull Chicago

Dunn, W. Understanding Human Development. New York: Pearson Education, 2013.

Dyfyniad MLA

Dunn, W. Understanding Human Development. Pearson Education, 2013.

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