D'ORAZIO, R., & HAPPEL, G. (1996). Pratical data modelling for database desiggn. John Wiley and Sons.
Chicago-čujuhus (17. p.)D'ORAZIO, Renzo, juo Gunter HAPPEL. Pratical Data Modelling for Database Desiggn. New York: John Wiley and Sons, 1996.
MLA-čujuhus (9. p.)D'ORAZIO, Renzo, juo Gunter HAPPEL. Pratical Data Modelling for Database Desiggn. John Wiley and Sons, 1996.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.