Cohn, P.M.
Free rings and their relations
Academic Press, 1985
Buku Teks SO
Passman, Donald S.
The algebraic structure of group rings
John Wiley & Sons, 1979
Buku Teks SO
Anderson, Frank W.
Rings and categories of modules
Springer-Verlag, 1992
Buku Teks SO
Computers in nonassociative rings and algebras
edited by Robert E. Beck
Academic Press, 1977
Buku Teks SO
Ma, Jingjing
Lecture notes on algebraic structure of lattice-ordered rings
World Scientific, 2014
Buku Teks SO