Fields, L. W., & Gallagher, R. R. (1990). Bookkeeping made simple (rev. ed.). Doubleday.
Lua i Stíl Chicago (17ú heag.)Fields, Louis W., agus Richard R. Gallagher. Bookkeeping Made Simple. rev. ed. New York: Doubleday, 1990.
Lua MLA (9ú heag.)Fields, Louis W., agus Richard R. Gallagher. Bookkeeping Made Simple. rev. ed. Doubleday, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.