APA (7th ed.) Citation

Trudgill, S. T. (1990). Barriers to a better environment: What stops us solving environmental problems? Belhaven Press.

Chicago Style (17th ed.) Citation

Trudgill, Stephen T. Barriers to a Better Environment: What Stops Us Solving Environmental Problems? London: Belhaven Press, 1990.

MLA (9th ed.) Citation

Trudgill, Stephen T. Barriers to a Better Environment: What Stops Us Solving Environmental Problems? Belhaven Press, 1990.