Dyfyniad APA

Dacey, J. S. (2004). Human development across the lifespan. Boston, MA: McGraw-Hill.

Dyfyniad Arddull Chicago

Dacey, John S. Human Development Across the Lifespan. Boston, MA: McGraw-Hill, 2004.

Dyfyniad MLA

Dacey, John S. Human Development Across the Lifespan. Boston, MA: McGraw-Hill, 2004.

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