Dyfyniad APA

Carol K. Sigelman, & Rider, E. A. (2006). Life-span human development. Australia ; Belmont, CA: Thomson/Wadsworth.

Dyfyniad Arddull Chicago

Carol K. Sigelman, và Elizabeth A. Rider. Life-span Human Development. Australia ; Belmont, CA: Thomson/Wadsworth, 2006.

Dyfyniad MLA

Carol K. Sigelman, và Elizabeth A. Rider. Life-span Human Development. Australia ; Belmont, CA: Thomson/Wadsworth, 2006.

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