Dyfyniad APA
Schell, R. E., & Hall, E. (1979). Developmental psychology today (3rd ed.). Random House.
Dyfyniad Arddull Chicago
Schell, Robert E., and Elizabeth Hall. Developmental Psychology Today. 3rd ed. New York: Random House, 1979.
Dyfyniad MLA
Schell, Robert E., and Elizabeth Hall. Developmental Psychology Today. 3rd ed. Random House, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.