Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.