Carr, E.H. (Edward Hallet), author
Macmillan, 1946
Buku Teks
Dallin, David J., author
Yale University Press, 1956
Buku Teks
Valkenier, Elizabeth Kridl, author
Frederick A. Praeger, 1983
Buku Teks
edited by Albert J. Schmidt
Martinus Nijhoff, 1990
Buku Teks
Sansom, George Bailey, Sir, 1883-1965, author
The Gresset Press, 1950;1950;1950
Buku Teks