Bone, Robert G.
Littlefield, Adam, 1957
Buku Teks
edited by John Miksic
Archipelago Press, [date of publication not identified]
Buku Teks
edited by Geoffrey Parker
Cambridge University Press, 1995
Buku Referensi
Miller, James
Angus & Robertson, 1985
Buku Teks
Beck, Roger
Blackwell Publishing, 2007
Buku Teks