APA (7th ed.) Citation

Wilder, D., & Greenfield, R. (1997). ESS: The Library of Congress Experimental Search System.

Chicago Style (17th ed.) Citation

Wilder, Dean, and Rich Greenfield. ESS: The Library of Congress Experimental Search System. 1997.

MLA (9th ed.) Citation

Wilder, Dean, and Rich Greenfield. ESS: The Library of Congress Experimental Search System. 1997.

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