Lawrence, Mark Atwood, author
Oxford University Press, 2010
Buku Teks
Brown, T. Louise
New York Routledge 1991,
Buku Teks
Tanham, George K., author
Ferderick A. Praeger, 1966
Buku Teks
edited by Andreas W. Daum, Lloyd C. Gardner, Wilfried Mausbach
Cambridge University Presss, 2003
Buku Teks
Logevall, Fredrik, 1963-, author
Random House Trade Paperbacks, 2012
Buku Teks