Thies, K. M., & Travers, J. F. (2009). Growth and development through the lifespan (2nd ed.). Jones and Bartlett.
Dyfyniad Arddull ChicagoThies, Kathleen M., and John F. Travers. Growth and Development Through the Lifespan. 2nd ed. Sudbury, MA: Jones and Bartlett, 2009.
Dyfyniad MLAThies, Kathleen M., and John F. Travers. Growth and Development Through the Lifespan. 2nd ed. Jones and Bartlett, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.