Elements of the Representation Theory of Associative Algebras: Techniques of representation theory.(Ibrahim Assem, Daniel Simson and Andrzej Skowronski)
Cambridge University Press, 2006
Representations of quivers. Lecture Notes, (M. Barot) http://www.matem.unam.mx/barot/articles/notes ictp. pdf, 2006
Coxeter functors and Gabriel's theorem. (IN Bernstein, Izrail Moiseevich Gel'fand, and VA Ponomarev)
Russian Mathematical Surveys, 28(2): 17-32, 1973
Introduction to representation theory
(Pavel I Etingof, Oleg Golberg, Sebastian Hensel, Tiankai Liu, Alex Schwendner, Dmitry Vaintrob and Elena Yudovina)
Vol. 59. American Mathematical Soc., 2011