APA-viite

Houghton, D. P. (2001). U.S.Foreign policy and the Iran hostage crisis.

Chicago-tyylinen lähdeviittaus

Houghton, David Patrick. U.S.Foreign Policy and the Iran Hostage Crisis. Cambridge, Cambridge University Press, 2001.

MLA-viite

Houghton, David Patrick. U.S.Foreign Policy and the Iran Hostage Crisis. 2001.