Ross, J. W. (1920). Ross's business English: A treatise on English as it is used in modern business, for use in commercial departments of private and public schools. South-western Pub. Co..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ross, J. Walter. Ross's Business English: A Treatise on English as It Is Used in Modern Business, for Use in Commercial Departments of Private and Public Schools. Cincinnati: South-western Pub. Co., 1920.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ross, J. Walter. Ross's Business English: A Treatise on English as It Is Used in Modern Business, for Use in Commercial Departments of Private and Public Schools. South-western Pub. Co., 1920.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.