Buhlig, R. (1914). Business English: A practice book. D.C. Heath & Co..
Lua i Stíl Chicago (17ú heag.)Buhlig, Rose. Business English: A Practice Book. Boston: D.C. Heath & Co., 1914.
Lua MLA (8ú heag.)Buhlig, Rose. Business English: A Practice Book. D.C. Heath & Co., 1914.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.