Anderson, Frank W.
Rings and categories of modules
Springer-Verlag, 1992
Buku Teks SO
Roman, Steven
Fundamentals of group theory: an advanced approach
Springer Science, 2012
eBooks
Machi, Antonio
Groups : an introduction to ideas and methods of the theory of groups
Springer, 2012
eBooks
Levy, Leon S.
Discrete structures of computer science / Leon S. Levy
John Wiley & Sons, 1980
Buku Teks SO
Lane, Saunders Mac
Categories for the working mathematician
Springer, 1994
Buku Teks SO