Schelling, Thomas C., author
The Twentieth Century Fund, 1961
Buku Teks
edited by Wolfram F. Hanrieder
Westview Press, 1986
Buku Teks
edited by P. Edward Haley, David M. Keithly, and Jack Merritt
Westview Press, 1985
Buku Teks
edited by Ernest W. Lefever
Frederick A. Praeger, 1962
Buku Teks
Prentice-Hall, 1961
Buku Teks