Hauser, Arnold, author
Alfred A. Knopf , 1952
Buku Teks
editors, Roy C. Macridis and Robert E. Ward
Prentice-Hall, 1963
Buku Teks
Webster, Hutton, author
D.C. Heath, 1947
Buku Teks
Smith, Preserved, author
Collier Books, 1962
Buku Teks
Browne, Edward G., author
Cambridge University Press, 1959
Buku Teks