APA (7th ed.) Citation

Delury, G. E. (1987). World encyclopedia of political systems & parties (2nd edition.). Facts on File Publications.

Chicago Style (17th ed.) Citation

Delury, George E. World Encyclopedia of Political Systems & Parties. 2nd edition. New York: Facts on File Publications, 1987.

MLA (9th ed.) Citation

Delury, George E. World Encyclopedia of Political Systems & Parties. 2nd edition. Facts on File Publications, 1987.