Janda, K., Berry, J., & Goldman, J. (1998). The challenge of democracy: Government in America (Brief edition, Third Edition.). Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Janda, Kenneth, Jeffrey Berry, agus Jerry Goldman. The Challenge of Democracy: Government in America. Brief edition, Third Edition. Boston: Houghton Mifflin, 1998.
Lua MLA (9ú heag.)Janda, Kenneth, et al. The Challenge of Democracy: Government in America. Brief edition, Third Edition. Houghton Mifflin, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.