Ruggiero, G. d. (1959). The history of european liberalism. Beacon.
Chicago-čujuhus (17. p.)Ruggiero, Guido de. The History of European Liberalism. Boston: Beacon, 1959.
MLA-čujuhus (9. p.)Ruggiero, Guido de. The History of European Liberalism. Beacon, 1959.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.