19 July 2014
I believe you are asking about Company law. For company law you may refer the book of Munish Bhandari. However for Mercantile Law you may refer the book of N. D. Kapoor.
Taxation- (i) For Tax Theory refer== T.N. Manoharan/ Girish Ahuja (ii)For Tax Numerical refer == Dr. Vinod Singhania