Negoita, Constantin Virgil
The Benjamin Cumming Pub., 1985
Buku Teks
Maus, Rex., editor
McGraw-Hill, 1991
Buku Referensi
Shafer, Glenn
Society for Industrial and Applied Mathematics, 1996
eBooks
Keravnou, E. T.
McGraw-Hill, 1986
Buku Teks
Alty, J.L.
NCC Publications, 1984
Buku Teks