PARMA POGGIO BERCETO 1921: ALPHA ROMEO-Ascari, SIVOCCI-CAMPARI, JOURNAL 1921
1921 Parma - Poggio di Berceto, CAMPARI, ASCARI, Ivocci - ALFA ROMEO
1914 Parma-Poggio di Berceto -1914 ILLUSTRATED SPORT -SCAT-EAGLE -STORERO
Motorcycle Climbing Sassi-Superga 1919, Nazzaro, Della Ferrera - MAGAZINE 1919
A Pictorial Survey of Racing Cars 1919- 1939 - TASO Mathieson
Patrick O'Brien's Grand Prix Rating System Season Summaries 1910-1919
