Following books on Taxation are available over internet with certain licensing rules. Few books have limited preview permission.
Part - A: Taxation
Ahuja & Gupta. Direct Taxes: law and practice. (2019).
Ahuja & Gupta. Practical approach to Direct and Indirect Taxes.
Ahuja & Gupta. Systematic approach to Income Tax.
Singhania & Singhania. Direct Taxes: law and practice. (2021-22).
Sinha & Srivastava. Indirect Tax reforms in India: 1947 to GST and beyond.
The ICSI study material. Advanced Tax Laws.
The ICSI study material. Direct Tax: Law and Practice.