Those interwiki links are redundant. They all actually point to a single page each i.e. The main article "Bhagavad GIta" at each language wiki. Typically, we should have that set of links only in our (Sanskrit) main page for Bahgavad gITa.
It is possible, tomorrow we may have one page for each chapter / sloka in other languages. In such case, direct interwiki links shall be / should be placed in each corresponding sanskrit page.