Coxeter, H. S. M.
John Wiley & Sons, 1980
Buku Teks
M. H. Mitarwan
[publisher not identified], [date of publication not identified]
Buku Teks
Bowen, H.J.M.
Academic Press, 1979
Buku Teks
M. Samsul
Liberty , 1988
Buku Teks
Plumb, P.H.
British Council, 1951
Buku Teks