APA
General Agreement of Tariffs and Trade (Geneva), . (1987). Trends in international trade. Geneva: GATT.
Chicago
General Agreement of Tariffs and Trade (Geneva), . 1987. Trends in international trade. Geneva: GATT.
Harvard
General Agreement of Tariffs and Trade (Geneva), . (1987). Trends in international trade. Geneva: GATT.
MLA
General Agreement of Tariffs and Trade (Geneva), . Trends in international trade. Geneva: GATT. 1987.