APA-viite (7. p.)

Betts, E. A., & Esterer, L. A. (1941). Directed spelling activities (Glossary ed.). American Book Company.

Chicago-viite (17. p.)

Betts, Emmett A., ja Louise A. Esterer. Directed Spelling Activities. Glossary ed. [New York ; Cincinnati, etc.]: American Book Company, 1941.

MLA-viite (8. p.)

Betts, Emmett A., ja Louise A. Esterer. Directed Spelling Activities. Glossary ed. American Book Company, 1941.