Sullivan, M. (1964). Programmed grammar. McGraw-Hill Book.
Lua i Stíl Chicago (17ú heag.)Sullivan, M.W. Programmed Grammar. New York, Estados Unidos: McGraw-Hill Book, 1964.
Lua MLA (9ú heag.)Sullivan, M.W. Programmed Grammar. McGraw-Hill Book, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
