Dyfyniad APA

Havighurst, R. J. Human Development and Education. Longmans Green & Co.

Dyfyniad Arddull Chicago

Havighurst, Robert J. Human Development and Education. London: Longmans Green & Co.

Dyfyniad MLA

Havighurst, Robert J. Human Development and Education. Longmans Green & Co.

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