APA (7th ed.) Citation

Williams, G., Chan, H. K., & Ortiz, P. Exploring the effects of Sheffield’s clean air zone on air quality and traffic volume. IOP Publishing.

Chicago Style (17th ed.) Citation

Williams, Guto, Harry Kai-Ho Chan, and Patricio Ortiz. Exploring the Effects of Sheffield’s Clean Air Zone on Air Quality and Traffic Volume. IOP Publishing.

MLA (9th ed.) Citation

Williams, Guto, et al. Exploring the Effects of Sheffield’s Clean Air Zone on Air Quality and Traffic Volume. IOP Publishing.