Edwards, Edward
Thoemmes Press, 1996
Buku Referensi
Lunden, Staffan
Goteborg Universitet, 2016
Buku Teks
Murray, David
Routledge/Thoemmes Press, 1996
Buku Referensi
Flower, William Henry
Routledge/Thoemmes Press, 1996
Buku Referensi
Acland, Henry W.
Routledge/Thoemmes Press, 1996
Buku Referensi