APA
International Reports Inc, . (1987). International Country Risk Guide, Sept. 87. London: .
Chicago
International Reports Inc, . 1987. International Country Risk Guide, Sept. 87. London: .
Harvard
International Reports Inc, . (1987). International Country Risk Guide, Sept. 87. London: .
MLA
International Reports Inc, . International Country Risk Guide, Sept. 87. London: . 1987.