APA (7e ed.) Bronvermelding

Trimble, J. H., & Chappell, D. (1989). A visual introduction to SQL. Wiley.

Chicago (17e ed.) Bronvermelding

Trimble, J. Harvey, en David Chappell. A Visual Introduction to SQL. New York: Wiley, 1989.

MLA (8e ed.) Bronvermelding

Trimble, J. Harvey, en David Chappell. A Visual Introduction to SQL. Wiley, 1989.