edited with an introduction by R. A. Humphreys & John Lynch
Alfred A. Knopf, 1966
Buku Teks
Crawford, William R., author
Frederick A. Praeger, 1961
Buku Teks
edited by Howard J. Wiarda, Harvey F. Kline
Westview Press, 2007
Buku Teks
Wynia, Gary W., author
Cambridge University Press , 1984
Buku Teks
Wilgus, A. Curtis, author
Barner & Noble, 1963
Buku Teks