APA (7e ed.) Bronvermelding

Costello, J. (1991). Ten days that saved the west. Bantam Press.

Chicago (17e ed.) Bronvermelding

Costello, John. Ten Days That Saved the West. London, New York, Toronto, Sydney, Auckland: Bantam Press, 1991.

MLA (8e ed.) Bronvermelding

Costello, John. Ten Days That Saved the West. Bantam Press, 1991.