APA (7th ed.) Citation

Robbers, G. (2007). Encyclopedia of world constitutions. Facts On File.

Chicago Style (17th ed.) Citation

Robbers, Gerhard. Encyclopedia of World Constitutions. New York: Facts On File, 2007.

MLA (9th ed.) Citation

Robbers, Gerhard. Encyclopedia of World Constitutions. Facts On File, 2007.

Warning: These citations may not always be 100% accurate.