Shirer, William L.
Simon and Schuster, 1960
Buku Teks
Mcdonough, Frank
Cambridge University Press , 2000
Buku Teks
Jarman, T.L.
The Cresset Press, 1955
Buku Teks
Epstein, Catherine
Wiley Blackwell, 2015
Buku Teks
Zaharia, Gheorghe
Stiintifica si Enciclopedica, 1975
Buku Teks