Dyfyniad APA

Development, Growth & Differentiation. Wiley-Blackwell.

Dyfyniad Arddull Chicago

Development, Growth & Differentiation. Wiley-Blackwell.

Dyfyniad MLA

Development, Growth & Differentiation. Wiley-Blackwell.

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