Lewis, E. S. E. (1919). Getting the most out of business: Observations of the application of the scientific method to business practice (6th ed.). Ronald Press Co.
Lua i Stíl Chicago (17ú heag.)Lewis, Elias St. Elmo. Getting the Most Out of Business: Observations of the Application of the Scientific Method to Business Practice. 6th ed. New York: Ronald Press Co, 1919.
Lua MLA (8ú heag.)Lewis, Elias St. Elmo. Getting the Most Out of Business: Observations of the Application of the Scientific Method to Business Practice. 6th ed. Ronald Press Co, 1919.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.