Spielvogel, J. J. (1994). Western civilization (2nd.ed.). West Publishing Company.
Citazione stile Chigago Style (17a edizione)Spielvogel, Jackson J. Western Civilization. 2nd.ed. Minneapolis / St paul: West Publishing Company, 1994.
Citatione MLA (9a ed.)Spielvogel, Jackson J. Western Civilization. 2nd.ed. West Publishing Company, 1994.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.