APA (7th ed.) Citation

Concerned Philosophers for Peace, Conference on Problems for Democracy, Kultgen, J. H., & Lenzi, M. (2006). Problems for democracy. Rodopi.

Chicago Style (17th ed.) Citation

Concerned Philosophers for Peace, Conference on Problems for Democracy, John H. Kultgen, and Mary Lenzi. Problems for Democracy. Amsterdam ; New York: Rodopi, 2006.

MLA (9th ed.) Citation

Concerned Philosophers for Peace, et al. Problems for Democracy. Rodopi, 2006.