APA (7th ed.) Citation

Harrington, J. L. (1998). SQL clearly explained. AP Professional.

Chicago Style (17th ed.) Citation

Harrington, Jan L. SQL Clearly Explained. San Diego: AP Professional, 1998.

MLA (8th ed.) Citation

Harrington, Jan L. SQL Clearly Explained. AP Professional, 1998.

Warning: These citations may not always be 100% accurate.