Groesbeck, J. (1883). Crittenden commercial arithmetic and business manual: Designed for use in counting-houses, academies, and commercial colleges (Revised ed.). Eldredge & Brother.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Groesbeck, John. Crittenden Commercial Arithmetic and Business Manual: Designed for Use in Counting-houses, Academies, and Commercial Colleges. Revised ed. Philadelphia: Eldredge & Brother, 1883.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Groesbeck, John. Crittenden Commercial Arithmetic and Business Manual: Designed for Use in Counting-houses, Academies, and Commercial Colleges. Revised ed. Eldredge & Brother, 1883.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.