Treitschke, Heinrich von
The University of Chicago Press, 1975
Buku Teks
Kitchen, Martin, author
Blackwell Pub, 2012
Buku Teks
Croce, Benedetto
Allen & Unwin, 1953
Buku Teks
Morsey, Rudolf
R. Oldenbourg Verlag, 1995
Buku Teks
Taylor, A. J. P. (Alan John Percivale), 1906-1990
London Routledge 2001,
Buku Teks