Sudargo Gautama, author
Cira Aditya Bakti, 1991
Buku Teks
edited by Roy Harvey Pearce
Prentice-Hall, 1962
Buku Teks
Parsons, Talcott, author
The Free Press, 1954
Buku Teks
Macaulay, T.B. (Thomas Babington)
Tauchnitz , 1857
Buku Teks
Ballantyne, William M., author
Curzon, 2000
Buku Teks