Economist Intelligence Unit (Great Britain) & Unesco. Division of Free Flow of Information. (1970). Trade barriers to knowledge: A manual of regulations affecting educational, scientific and cultural materials (New and rev. ed.). UNESCO.
Chicago Style (17th ed.) CitationEconomist Intelligence Unit (Great Britain) and Unesco. Division of Free Flow of Information. Trade Barriers to Knowledge: A Manual of Regulations Affecting Educational, Scientific and Cultural Materials. New and rev. ed. Paris: UNESCO, 1970.
MLA (9th ed.) CitationEconomist Intelligence Unit (Great Britain) and Unesco. Division of Free Flow of Information. Trade Barriers to Knowledge: A Manual of Regulations Affecting Educational, Scientific and Cultural Materials. New and rev. ed. UNESCO, 1970.
Warning: These citations may not always be 100% accurate.