N. Spykman

Geographic Objectives in Foreign Policy, I

N. Spykman, Abbie A. Rollins, 1939, American Political Science Review.

Frontiers, Security, and International Organization

N. Spykman, 1942 .

The social theory of Georg Simmel

N. Spykman, 1925 .

America's Strategy in World Politics.

M. Beck, N. Spykman, 1942 .

Geography and Foreign Policy, II

N. Spykman, 1938, American Political Science Review.

Geography and Foreign Policy, I

N. Spykman, 1938, American Political Science Review.

The Geography of Peace.

N. Spykman, R. B. Frost, Helen R. Nicholl, 1944, American Journal of International Law.