APA (7th ed.) Citation

Ludlum, R. (1990). The Bourne ultimatum. Grafton.

Chicago Style (17th ed.) Citation

Ludlum, Robert. The Bourne Ultimatum. London u.a: Grafton, 1990.

MLA (9th ed.) Citation

Ludlum, Robert. The Bourne Ultimatum. Grafton, 1990.

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