Cita APA

Hartmann, S., Leck, U., & Link, S. On codd families of keys over incomplete relations.

Chicago Style Citation

Hartmann, Sven., Uwe Leck, i Sebastian Link. On Codd Families of Keys Over Incomplete Relations.

Cita MLA

Hartmann, Sven., Uwe Leck, i Sebastian Link. On Codd Families of Keys Over Incomplete Relations.

Atenció: Aquestes cites poden no estar 100% correctes.