Cita APA (7a ed.)

Martel, G. (1994). American foreign relations reconsidered, 1890-1993. Routledge.

Cita Chicago Style (17a ed.)

Martel, Gordon. American Foreign Relations Reconsidered, 1890-1993. London [etc.]: Routledge, 1994.

Cita MLA (9a ed.)

Martel, Gordon. American Foreign Relations Reconsidered, 1890-1993. Routledge, 1994.