Citazione Stile APA (7a Edizione)

Lenz, L. (2008). Power and policy: America's first steps to superpower, 1889-1922. Algora Pub..

Citazione stile Chigago Style (17a edizione)

Lenz, Lawrence. Power and Policy: America's First Steps to Superpower, 1889-1922. New York: Algora Pub., 2008.

Citatione MLA (9a ed.)

Lenz, Lawrence. Power and Policy: America's First Steps to Superpower, 1889-1922. Algora Pub., 2008.