Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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