WORLD.. & DELURY, G. E. (1987). World encyclopedia of political system and parties vol. 1: Afganistan - Luxembourg. Facts on File Publications.
Chicago-viite (17. p.)WORLD.. ja George E. DELURY. World Encyclopedia of Political System and Parties Vol. 1: Afganistan - Luxembourg. New York: Facts on File Publications, 1987.
MLA-viite (9. p.)WORLD.. ja George E. DELURY. World Encyclopedia of Political System and Parties Vol. 1: Afganistan - Luxembourg. Facts on File Publications, 1987.
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