Παραπομπή APA

OECD. (1967). Future directions for research in urban transportation. Paris: Organisation for Economic Co-operation and Development. Directorate for Scientific Affairs.

Παραπομπή Chicago Style

OECD. Future Directions for Research in Urban Transportation. Paris: Organisation for Economic Co-operation and Development. Directorate for Scientific Affairs, 1967.

Παραπομπή MLA

OECD. Future Directions for Research in Urban Transportation. Paris: Organisation for Economic Co-operation and Development. Directorate for Scientific Affairs, 1967.

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