APA (7th ed.) Citation

Lees, D., & McDuell, B. (2001). Chemistry for OCR A. Heinemann educational publishers.

Chicago Style (17th ed.) Citation

Lees, David, and Bob McDuell. Chemistry for OCR A. London: Heinemann educational publishers, 2001.

MLA (9th ed.) Citation

Lees, David, and Bob McDuell. Chemistry for OCR A. Heinemann educational publishers, 2001.

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