Jones, Joseph, author
University of Queensland Press, 1976
Buku Teks
Dena K. Tarshis, author
L.h.selman LTD, 2001
Buku Teks
Treitschke, Heinrich von
The University of Chicago Press, 1975
Buku Teks
Kopp, Hermann, author
Springer, 2012
eBooks
Oxford University Press, 2014
Buku Teks