APA-viite (7. p.)

Betts, E. A., Esterer, L. A., & Betts, E. A. (1947). Directed spelling activities. American Book Co..

Chicago-viite (17. p.)

Betts, Emmett A., Louise A. Esterer, ja Emmett Albert Betts. Directed Spelling Activities. [New York ; Cincinnati]: American Book Co., 1947.

MLA-viite (8. p.)

Betts, Emmett A., et al. Directed Spelling Activities. American Book Co., 1947.