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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)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.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.