Kokoska, Stephen
Springer-Verlag, 1989
Buku Teks
Ross, Sheldon M., author
Academic Press, 2014
Buku Teks
Benjamin, Jack C., author
McGraw-Hill, 1970
Buku Teks
edited by E. J. Williams
North-Holland Pub., 1976
Buku Teks
Blum, Julius R., author
W.B. Saunders, 1972
Buku Teks