Cita APA (7a ed.)

Horn, E., & Peterson, T. (1945). Spelling you need. J.B. Lippincott Company.

Cita Chicago Style (17a ed.)

Horn, Ernest, y Thelma Peterson. Spelling You Need. Chicago, New York: J.B. Lippincott Company, 1945.

Cita MLA (8a ed.)

Horn, Ernest, y Thelma Peterson. Spelling You Need. J.B. Lippincott Company, 1945.