Seminar on National Capital Region Plan (Projected, not held), & Chaudhuri, D. B. R. (1975). Planning for a dynamic metropolitan region: Compendium of selected background papers prepared for Seminar on National Capital Region Plan. Punjab Haryana & Delhi Chamber of Commerce and Industry.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Seminar on National Capital Region Plan (Projected, not held), و Dipak Basu Ray Chaudhuri. Planning for a Dynamic Metropolitan Region: Compendium of Selected Background Papers Prepared for Seminar on National Capital Region Plan. New Delhi: Punjab Haryana & Delhi Chamber of Commerce and Industry, 1975.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Seminar on National Capital Region Plan (Projected, not held), و Dipak Basu Ray Chaudhuri. Planning for a Dynamic Metropolitan Region: Compendium of Selected Background Papers Prepared for Seminar on National Capital Region Plan. Punjab Haryana & Delhi Chamber of Commerce and Industry, 1975.