APA (7th ed.) Zitazioa
Holyoke, T. T. (2014). Interest groups and lobbying: Pursuing political interests in America. Westview Press.
Chicago Style (17th ed.) Zitazioa
Holyoke, Thomas T. Interest Groups and Lobbying: Pursuing Political Interests in America. Boulder, Colorado: Westview Press, 2014.
MLA (9th ed.) Zitazioa
Holyoke, Thomas T. Interest Groups and Lobbying: Pursuing Political Interests in America. Westview Press, 2014.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.