Tucker, R. W. (1968). Nation or empiren The debate over American foreign policy. Johns Hopkins Press.
Lua i Stíl Chicago (17ú heag.)Tucker, Robert W. Nation or Empiren The Debate over American Foreign Policy. Baltimore: Johns Hopkins Press, 1968.
Lua MLA (9ú heag.)Tucker, Robert W. Nation or Empiren The Debate over American Foreign Policy. Johns Hopkins Press, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.