Kenneth Waltz, "The Spread of Nuclear Weapons: More May Better"
- Published in 1981 in Adelphi Papers, Number 171.
- http://www.mtholyoke.edu/acad/intrel/waltz1.htm

Conversation with Kenneth N. Waltz, cover page
- Harry Kreisler interviews Kenneth Waltz on International Relations Theory: February, 2003.
- http://globetrotter.berkeley.edu/people3/Waltz/waltz-con0.html

Theories of International Relations - Realism
- Bibliography from the International Relations Resource Center.
- http://www.wadsworth.com/politicalscience_d/special_features/ext/ir/tir/tir_infotrac1_1.html

The Six Principles of Political Realism
- Taken from Hans Morgenthau's "Politics Among Nations," this is one of the first systematic explanations of the principles of international relations.
- http://www.mtholyoke.edu/acad/intrel/morg6.htm