APA (7th ed.) Citation

Ludlum. (1990). The Bourne ultimatum. HarperCollins.

Chicago Style (17th ed.) Citation

Ludlum. The Bourne Ultimatum. London: HarperCollins, 1990.

MLA (8th ed.) Citation

Ludlum. The Bourne Ultimatum. HarperCollins, 1990.

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