Suggest me

For Cost Accounting, study Module is good with Practice Manual. Also, you can refer P.C tulsians or Padhuka!!

Even a text book by Saxena Vashisht is good one. Every author has some view on the subject, therefore one should not read different book for the same subject at the same time. Pick up just one good book and keep consistency in referring the same wherever required. Institute's study material coupled with the practive manual should always get first priority.