APA

Organisation for Economic Co-operation and Development, . (1971). Electronic aids for freeway operation. Paris: Organisation for Economic Co-operation and Development.

Chicago

Organisation for Economic Co-operation and Development, . 1971. Electronic aids for freeway operation. Paris: Organisation for Economic Co-operation and Development.

Harvard

Organisation for Economic Co-operation and Development, . (1971). Electronic aids for freeway operation. Paris: Organisation for Economic Co-operation and Development.

MLA

Organisation for Economic Co-operation and Development, . Electronic aids for freeway operation. Paris: Organisation for Economic Co-operation and Development. 1971.