Van der Tak, H. G., & Ray, A. (1971). The economic benefits of road transport projects. International Bank for Reconstruction and Development]; distributed by Johns Hopkins Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Van der Tak, Herman G., و Anandarup Ray. The Economic Benefits of Road Transport Projects. [Washington: International Bank for Reconstruction and Development]; distributed by Johns Hopkins Press, 1971.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Van der Tak, Herman G., و Anandarup Ray. The Economic Benefits of Road Transport Projects. International Bank for Reconstruction and Development]; distributed by Johns Hopkins Press, 1971.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.