Dyfyniad APA
Johnson, S. W., & Morasky, R. L. (1980). Learning disabilities (2nd ed.). Allyn and Bacon.
Dyfyniad Arddull Chicago
Johnson, Stanley W., and Robert L. Morasky. Learning Disabilities. 2nd ed. Boston: Allyn and Bacon, 1980.
Dyfyniad MLA
Johnson, Stanley W., and Robert L. Morasky. Learning Disabilities. 2nd ed. Allyn and Bacon, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.