Foulds, L.R.
New York Springer-Verlag 1984,
Buku Referensi
Foulds, L.R.
Springer, 1984
Buku Teks
"Bandung: ITB, 1973",
Buku Teks
S. Mac Lane
"New York: Springer-Verlag, 1994",
Buku Teks
Causton, David R., author
Yogyakarta Gadjah Mada University Press 1993,
Buku Teks