More, Thomas, Saint, 1478-1535
Utopia
David Campbell Publishers, 1992
 Buku Referensi
More, Thomas, Saint, 1478-1535
Utopia
Appleton Century-Crofts, 1949.
 Buku Teks SO
Hamilton, R.A.
Venture to the arctic
Pinguin Books, 1958
 Buku Teks SO
Call, Tomme Clark
The Mexican venture
Oxford University Press, 1953
 Buku Teks SO
Spiro, Herbert J.
Responsibility in government: theory and practice/ Herbert J. Spiro
Van Nostrand Reinhold, 1969
 Buku Teks SO