APA-viite (7. p.)

Wittenberg, W. (1980). A prescriptive spelling program (Teacher's ed.). Barnell Loft.

Chicago-viite (17. p.)

Wittenberg, William. A Prescriptive Spelling Program. Teacher's ed. Baldwin, N.Y.: Barnell Loft, 1980.

MLA-viite (8. p.)

Wittenberg, William. A Prescriptive Spelling Program. Teacher's ed. Barnell Loft, 1980.