Zonis, M., & Semler, D. (1992). The East European opportunity: The complete business guide and sourcebook. Wiley.
Chicago-viite (17. p.)Zonis, Marvin, ja Dwight Semler. The East European Opportunity: The Complete Business Guide and Sourcebook. New York: Wiley, 1992.
MLA-viite (8. p.)Zonis, Marvin, ja Dwight Semler. The East European Opportunity: The Complete Business Guide and Sourcebook. Wiley, 1992.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.