Blackwell Publishing, 2007
Buku Teks
Kristensen, W. Brede
De erven F. Bohn N.V, 1949
Buku Teks
Murray, Gilbert
Oxford University Press, 1946
Buku Teks
Rose, H.J.
Hutchinson's University Library , [date of publication not identified]
Buku Teks
Livingstone, R. W.
Clarendion, 1951
Buku Teks