Coxeter, H. S. M.
John Wiley & Sons, 1980
Buku Teks
Strugnell, John
University of Queensland Press, 1969
Buku Teks
Vaina, Lucia M., author
Oxford University Press, 2016
eBooks
Beck, John
John Wiley , 1980
Buku Teks
Norris, A.C., author
John Wiley & Sons, 1981
Buku Teks