Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.