Cita APA (7a ed.)

Langer, W. L., & Armstrong, H. F. (1933). Foreign affairs bibliography: A selected and annotated list of books on international relations, 1919-1932. Harper & Brothers for Council on Foreign Relations.

Cita Chicago Style (17a ed.)

Langer, William L., y Hamilton Fish Armstrong. Foreign Affairs Bibliography: A Selected and Annotated List of Books on International Relations, 1919-1932. New York [etc.]: Harper & Brothers for Council on Foreign Relations, 1933.

Cita MLA (9a ed.)

Langer, William L., y Hamilton Fish Armstrong. Foreign Affairs Bibliography: A Selected and Annotated List of Books on International Relations, 1919-1932. Harper & Brothers for Council on Foreign Relations, 1933.