APA (7th ed.) Citation

Fredriksen, J. C. (2004). Biographical dictionary of modern world leaders. Facts on File.

Chicago Style (17th ed.) Citation

Fredriksen, John C. Biographical Dictionary of Modern World Leaders. New York: Facts on File, 2004.

MLA (9th ed.) Citation

Fredriksen, John C. Biographical Dictionary of Modern World Leaders. Facts on File, 2004.