Gollomb, Joseph
The Vanguard Press, 1949
Buku Teks
Schweitzer, Albert
New American Library, 1960
Buku Teks
Singer, Kurt D.
Wilco Publishing House, 2014
Buku Teks
Babel, H.A.
Neuchatel Messeiller 1954
Buku Teks
Schweitzer, Albert
Macmillan, 1959
Buku Teks