Dyfyniad APA

Heflin, L. J., & Bullock, L. M. (1992). Exceptionalities in children and youth (Instructor's ed.). Allyn and Bacon.

Dyfyniad Arddull Chicago

Heflin, L. Juane, and Lyndal M. Bullock. Exceptionalities in Children and Youth. Instructor's ed. Boston: Allyn and Bacon, 1992.

Dyfyniad MLA

Heflin, L. Juane, and Lyndal M. Bullock. Exceptionalities in Children and Youth. Instructor's ed. Allyn and Bacon, 1992.

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