Ahuja, G., & Gupta, R. (2019). Systematic Approach to Taxation (41th.). Wolters Kluwer.
Lua i Stíl Chicago (17ú heag.)Ahuja, Girish, agus Ravi Gupta. Systematic Approach to Taxation. 41th. Mohali: Wolters Kluwer, 2019.
Lua MLA (9ú heag.)Ahuja, Girish, agus Ravi Gupta. Systematic Approach to Taxation. 41th. Wolters Kluwer, 2019.
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