Dyfyniad APA

(1977). The Adult Years,by Wilbur Bradbury and the Editors of Time-Life Books. Time-Life International.

Dyfyniad Arddull Chicago

The Adult Years,by Wilbur Bradbury and the Editors of Time-Life Books. Nederland: Time-Life International, 1977.

Dyfyniad MLA

The Adult Years,by Wilbur Bradbury and the Editors of Time-Life Books. Time-Life International, 1977.

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