Dyfyniad APA

Hardman, M. L. (1993). Human exceptionality: Society, school and family (4th.ed.). Allyn and Bacon.

Dyfyniad Arddull Chicago

Hardman, Michael L. Human Exceptionality: Society, School and Family. 4th.ed. Boston: Allyn and Bacon, 1993.

Dyfyniad MLA

Hardman, Michael L. Human Exceptionality: Society, School and Family. 4th.ed. Allyn and Bacon, 1993.

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