APA (7th ed.) Citation

Butterworth, B. (1991). How Things Work. Publications International,Ltd..

Chicago Style (17th ed.) Citation

Butterworth, Brent. How Things Work. United States: Publications International,Ltd., 1991.

MLA (9th ed.) Citation

Butterworth, Brent. How Things Work. Publications International,Ltd., 1991.

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