PRITCHETT, C. H. (1971). The American constitutional system (4th ed.). McGraw-Hill.
Chicago Style (17th ed.) ZitazioaPRITCHETT, C. Herman. The American Constitutional System. 4th ed. New York: McGraw-Hill, 1971.
MLA (9th ed.) ZitazioaPRITCHETT, C. Herman. The American Constitutional System. 4th ed. McGraw-Hill, 1971.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.