APA (7th ed.) Citation

Hughes, D., Parpworth, N., & Upson, J. (1998). Air pollution : law and regulation / David Hughes, Neil Parpworth, Joan Upson: Law and regulation. Jordan Publishing.

Chicago Style (17th ed.) Citation

Hughes, David, Neil Parpworth, and Joan Upson. Air Pollution : Law and Regulation / David Hughes, Neil Parpworth, Joan Upson: Law and Regulation. Bristol: Jordan Publishing, 1998.

MLA (9th ed.) Citation

Hughes, David, et al. Air Pollution : Law and Regulation / David Hughes, Neil Parpworth, Joan Upson: Law and Regulation. Jordan Publishing, 1998.

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