Wiley-Blackwell, 2013
Buku Teks
Mosse, Fernand, author
The Johns Hopkins Press, 1952
Buku Teks
Whitla, William, author
Wiley-Blackwell, 2010
Buku Referensi
Swets & Zeitlinger B.V., 1994
Majalah, Jurnal, Buletin
Turville-Petre, Thorlac, author
Blackwell Publishing, 2007
Buku Teks