APA
UNITED NATIONS E. (. C. f. I. T. (., UNITED NATIONS E. (. C. f. I. T. (., . (1956). Agreement on signs for road works. Geneva: United Nations.
Chicago
UNITED NATIONS EUROPE (Economic Commission for-) INLAND TRANSPORT (Committee-), UNITED NATIONS EUROPE (Economic Commission for-) INLAND TRANSPORT (Committee-), . 1956. Agreement on signs for road works. Geneva: United Nations.
Harvard
UNITED NATIONS E. (. C. f. I. T. (., UNITED NATIONS E. (. C. f. I. T. (., . (1956). Agreement on signs for road works. Geneva: United Nations.
MLA
UNITED NATIONS EUROPE (Economic Commission for-) INLAND TRANSPORT (Committee-), UNITED NATIONS EUROPE (Economic Commission for-) INLAND TRANSPORT (Committee-), . Agreement on signs for road works. Geneva: United Nations. 1956.
