APA Citatie

Groff, J. R., & Weinberg, P. . .. (2003). The complete reference SQL (2 /.).

Chicago Style citaat

Groff, James R., en Paul Weinberg. The Complete Reference SQL. 2 /. New Delhi : Tata Mcgraw hill, 2003.

MLA citatie

Groff, James R., en Paul Weinberg. The Complete Reference SQL. 2 /. 2003.