Bharath, R.
Ellis Horwood, 1991
Buku Teks
Swamy, M.N.S., author
John Wiley & Sons, 1981
Buku Teks
Gould, Ronald, author
The Benjamin Cumming , 1988
Buku Teks
Hsu, Lih-Hsing, author
CRC Press, Taylor & Francis Group, 2009
Buku Teks
Bollobas, Bela, author
Academic Press, 1978
Buku Teks