Ray, J. L. (1990). Global politics (4th ed.). Houghton Mifflin Co..
Chicago-čujuhus (17. p.)Ray, James Lee. Global Politics. 4th ed. Boston: Houghton Mifflin Co., 1990.
MLA-čujuhus (9. p.)Ray, James Lee. Global Politics. 4th ed. Houghton Mifflin Co., 1990.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.