APA (7th ed.) Citation

Dury, G. H. (1981). An introduction to environmental systems. Heinemann.

Chicago Style (17th ed.) Citation

Dury, George H. An Introduction to Environmental Systems. London: Heinemann, 1981.

MLA (9th ed.) Citation

Dury, George H. An Introduction to Environmental Systems. Heinemann, 1981.

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