Dyfyniad APA
Hoffmann, L., Paris, S., & Hall, E. (1994). Developmental psychology today (6th. ed.). McGraw-Hill.
Dyfyniad Arddull Chicago
Hoffmann, Lois, Scott Paris, and Elizabeth Hall. Developmental Psychology Today. 6th. ed. New York: McGraw-Hill, 1994.
Dyfyniad MLA
Hoffmann, Lois, et al. Developmental Psychology Today. 6th. ed. McGraw-Hill, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.