OECD. (1967). Future directions for research in urban transportation. Paris: Organisation for Economic Co-operation and Development. Directorate for Scientific Affairs.
শিকাগো স্টাইলে সাইটেশনOECD. Future Directions for Research in Urban Transportation. Paris: Organisation for Economic Co-operation and Development. Directorate for Scientific Affairs, 1967.
এমএলএ সাইটেশনOECD. Future Directions for Research in Urban Transportation. Paris: Organisation for Economic Co-operation and Development. Directorate for Scientific Affairs, 1967.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.