Hello,
For CBSE 11th and 12th Commerce, you may refer DK Goel/TS Grewal for Accountancy, in case of Business Studies the best option for reference books are by Meena Verma, Sandeep Garg, Poonal Gandhi, for Economics you can choose reference books by B.Sachdeva, Sandeep Garg, TR Jain and VK Ojhri.
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