APA (7th ed.) Citation

Collins, A., & Fielding, H. (2009). Bridget Jones's diary. Macmillan Heinemann ELT.

Chicago Style (17th ed.) Citation

Collins, Anne, and Helen Fielding. Bridget Jones's Diary. Oxford [England]: Macmillan Heinemann ELT, 2009.

MLA (9th ed.) Citation

Collins, Anne, and Helen Fielding. Bridget Jones's Diary. Macmillan Heinemann ELT, 2009.