APA (7th ed.) Citation

Davis, H. (2006). Search engine optimization. O'Reilly.

Chicago Style (17th ed.) Citation

Davis, Harold. Search Engine Optimization. [Calif.]: O'Reilly, 2006.

MLA (8th ed.) Citation

Davis, Harold. Search Engine Optimization. O'Reilly, 2006.

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