Kail, R. V. (2007). Human development: A life - span view. Australia: Thomson.
Dyfyniad Arddull ChicagoKail, Robert V. Human Development: A Life - Span View. Australia: Thomson, 2007.
Dyfyniad MLAKail, Robert V. Human Development: A Life - Span View. Australia: Thomson, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.