Card Europe. (1997). Card Europe report into smart cards in loyalty applications. Card Europe.
Cita Chicago (17th ed.)Card Europe. Card Europe Report into Smart Cards in Loyalty Applications. [United Kingdom]: Card Europe, 1997.
Cita MLA (8th ed.)Card Europe. Card Europe Report into Smart Cards in Loyalty Applications. Card Europe, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.