Freeman, M. H. (1953). Bookkeeping simplified. Gregg Pub. Division, McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Freeman, M. Herbert. Bookkeeping Simplified. New York: Gregg Pub. Division, McGraw-Hill, 1953.
Lua MLA (8ú heag.)Freeman, M. Herbert. Bookkeeping Simplified. Gregg Pub. Division, McGraw-Hill, 1953.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.