edited by Richard S. Kirkendall
John Wiley , 1973
Buku Teks
Gordon, Lincoln
Harvard University Press, 1963
Buku Teks
Bahm, Archie J.
Archie J. Bahm, 1985
Buku Teks
Schlesinger, Arthur Meier
Hougton Mifflin, 1959
Buku Teks
Laski, Harold J.
George Allen and Unwin, 1952
Buku Teks