League of Nations. Organisation for Communications and Transit, European Conference on Road Traffic, & European Conference on Road Traffic. (1933). Road signalling: Recommendations and prescriptive rules adopted by the European Conference on Road Traffic and the Permanent Committee on Road Traffic. League of Nations.
Chicago Style (17th ed.) CitationLeague of Nations. Organisation for Communications and Transit, European Conference on Road Traffic, and European Conference on Road Traffic. Road Signalling: Recommendations and Prescriptive Rules Adopted by the European Conference on Road Traffic and the Permanent Committee on Road Traffic. [Geneva: League of Nations, 1933.
MLA引文League of Nations. Organisation for Communications and Transit, et al. Road Signalling: Recommendations and Prescriptive Rules Adopted by the European Conference on Road Traffic and the Permanent Committee on Road Traffic. League of Nations, 1933.