Hall, Patrick A.V., author
Macdonald and Jane`s, 1975
Buku Teks
Keys, William J., author
Anheim Publishing, 1973
Buku Teks
by V.A. Dyck ... [and others]
Prentice-Hall, 1982
Buku Teks
Jonathan M. Borwein, Matthew P. Skerritt
Springer Science;, 2012
eBooks
Biggs, Norman L., author
Clarendon Press, 1989
Buku Teks