APA (7th ed.) Citation

Bell, C. (2002). GCSE biology exam secrets. Letts Educational.

Chicago Style (17th ed.) Citation

Bell, Colin. GCSE Biology Exam Secrets. UK: Letts Educational, 2002.

MLA (9th ed.) Citation

Bell, Colin. GCSE Biology Exam Secrets. Letts Educational, 2002.

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