Harrod, J. (1972). Trade union foreign policy: The case of British and American unions in Jamaica. [s.n.] ; en vente chez Doubleday.
Chicago-referens (17:e uppl.)Harrod, Jeffrey. Trade Union Foreign Policy: The Case of British and American Unions in Jamaica. [s.l.] : New York: [s.n.] ; en vente chez Doubleday, 1972.
MLA-referens (8:e uppl.)Harrod, Jeffrey. Trade Union Foreign Policy: The Case of British and American Unions in Jamaica. [s.n.] ; en vente chez Doubleday, 1972.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.