Dyfyniad APA
Dacey, J. S., & Travers, J. F. (1996). Human development: Across the lifespan (3rd ed.). Brown & Benchmark Publishers.
Dyfyniad Arddull Chicago
Dacey, John S., and John F. Travers. Human Development: Across the Lifespan. 3rd ed. Madison, Wis.: Brown & Benchmark Publishers, 1996.
Dyfyniad MLA
Dacey, John S., and John F. Travers. Human Development: Across the Lifespan. 3rd ed. Brown & Benchmark Publishers, 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.