Waddington, P.A.J, author
Learning Matters, 2010
Buku Teks
Carr, E.H. (Edward Hallet), author
Vintage Books, 1961
Buku Teks
Carr, E.H. (Edward Hallet), author
Penguin Books, 1975
Buku Teks
Harcnack, Adolf, author
Harper & Brathers, 1957
Buku Teks
Wolfe, Cary, author
University of Minnesota Press, 2010
Buku Teks