Dyfyniad APA
Salkind, N. J. (1985). Theories of human development (2nd ed.). John Wiley & Sons.
Dyfyniad Arddull Chicago
Salkind, Neil J. Theories of Human Development. 2nd ed. New York: John Wiley & Sons, 1985.
Dyfyniad MLA
Salkind, Neil J. Theories of Human Development. 2nd ed. John Wiley & Sons, 1985.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.