Cita APA (7a ed.)
Gordon, J. S., & Harper, T. (1993). United States-European Community trade resources. John Wiley & Sons, Inc.
Cita Chicago Style (17a ed.)
Gordon, John S., y Timothy Harper. United States-European Community Trade Resources. New York: John Wiley & Sons, Inc, 1993.
Cita MLA (9a ed.)
Gordon, John S., y Timothy Harper. United States-European Community Trade Resources. John Wiley & Sons, Inc, 1993.
Precaución: Estas citas no son 100% exactas.