APA (7th ed.) Zitazioa
Mills, H. (1974). Commanding sentences. Scott, Foresman.
Chicago Style (17th ed.) Zitazioa
Mills, Helen. Commanding Sentences. Glenview, Ill.: Scott, Foresman, 1974.
MLA (9th ed.) Zitazioa
Mills, Helen. Commanding Sentences. Scott, Foresman, 1974.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.