International Comparison Programme (Corporate Name)

World comparisons of real gross domestic product and purchasing power, 1985, 1994: t.p. (International Comparison Programme) pref. ("Since its inception in the late 1960s, the ICP has grown from a pilot project to a global programme and is carried out through cooperative efforts among a large number of organizations at the country, regional and global levels. In the course of decades, it has undergone several changes in terms of its methodology and organizational framework")

International Comparison Program, Home page, viewed Feb. 26, 2008 (International Comparison Program, The World Bank; ICP) under History (The program was first established in 1968 as a joint venture of the UN and the International Comparisons Unit of the University of Pennsylvania ... Since 1993, the World Bank has assumed the role of global coordinator for the ICP in non-OECD countries)

OCLC, Dec. 7, 2017 (usage: United Nations International Comparison Project, 1975-1993; Handbook of the international comparison programme, published by UN in 1992; Purchasing power of currencies, published by the World Bank in 1993, "A compilation of data from the United Nations International Comparison Programme (ICP): 1975, 1980, 1985, and 1990")

Wikipedia, French version, viewed Dec. 7, 2017 (Programme de comparaison internationale, PCI)

LC database, 08-10-94 (hdg.: United Nations International Comparison Project)