Elwell, F. H., Zelliot, E. A., & Good, H. I. (1939). Personal and business record-keeping. Ginn and Company.
Lua i Stíl Chicago (17ú heag.)Elwell, Fayette H., Ernest Adolph Zelliot, agus Harrys I. Good. Personal and Business Record-keeping. Boston : New York [etc.]: Ginn and Company, 1939.
Lua MLA (8ú heag.)Elwell, Fayette H., et al. Personal and Business Record-keeping. Ginn and Company, 1939.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.