APA (7th ed.) Citation

Vang, S. (1991). SQL and relational databases. Microtrend Books.

Chicago Style (17th ed.) Citation

Vang, Soren. SQL and Relational Databases. San Marcos, Calif: Microtrend Books, 1991.

MLA (9th ed.) Citation

Vang, Soren. SQL and Relational Databases. Microtrend Books, 1991.