APA (7th ed.) Citation

Christie, A. (2002). 4.50 from Paddington. HarperCollins publishers.

Chicago Style (17th ed.) Citation

Christie, Agatha. 4.50 from Paddington. London: HarperCollins publishers, 2002.

MLA (9th ed.) Citation

Christie, Agatha. 4.50 from Paddington. HarperCollins publishers, 2002.

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