توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)
Hinkelman, E. G. (2009). A short course in international payments: How to use letters of credit, D/P and D/A terms, prepayment, credit, and cyberpayments in international transactions (3rd ed.). World Trade Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)
Hinkelman, Edward G. A Short Course in International Payments: How to Use Letters of Credit, D/P and D/A Terms, Prepayment, Credit, and Cyberpayments in International Transactions. 3rd ed. Petaluma, CA: World Trade Press, 2009.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)
Hinkelman, Edward G. A Short Course in International Payments: How to Use Letters of Credit, D/P and D/A Terms, Prepayment, Credit, and Cyberpayments in International Transactions. 3rd ed. World Trade Press, 2009.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.