APA-viite

Ludlum, R. (1990). The Bourne Ultimatum: His New Jason Bourne Bestseller. Grafton Books.

Chicago-tyylinen lähdeviittaus

Ludlum, Robert. The Bourne Ultimatum: His New Jason Bourne Bestseller. London: Grafton Books, 1990.

MLA-viite

Ludlum, Robert. The Bourne Ultimatum: His New Jason Bourne Bestseller. Grafton Books, 1990.