APA (7th ed.) Citation

Ellen Bowness, Cain, T., & Sarah Hilton. (2006). GCSE Biology OCR Gateway: The Workbook Higher Level. CGP.

Chicago Style (17th ed.) Citation

Ellen Bowness, Tom Cain, and Sarah Hilton. GCSE Biology OCR Gateway: The Workbook Higher Level. CGP, 2006.

MLA (9th ed.) Citation

Ellen Bowness, et al. GCSE Biology OCR Gateway: The Workbook Higher Level. CGP, 2006.