Dyfyniad APA

Clarke-Stewart, A., Perlmutter, M., & Friedman, S. (1988). Lifelong human development. John Wiley & Sons, Inc.

Dyfyniad Arddull Chicago

Clarke-Stewart, Alison, Marion Perlmutter, and Susan Friedman. Lifelong Human Development. New York: John Wiley & Sons, Inc, 1988.

Dyfyniad MLA

Clarke-Stewart, Alison, et al. Lifelong Human Development. John Wiley & Sons, Inc, 1988.

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