Inc, R. M. (1937). Statements of payments and amounts due under the agreement of November 13, 1935. Saint Louis University Libraries Digitization Center.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Inc, Ravenna Mosaics. Statements of Payments and Amounts Due Under the Agreement of November 13, 1935. Saint Louis University Libraries Digitization Center, 1937.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Inc, Ravenna Mosaics. Statements of Payments and Amounts Due Under the Agreement of November 13, 1935. Saint Louis University Libraries Digitization Center, 1937.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.