The Bhagavad Gita with the  commentary of Shankara.

It should be noted that in the Sanskrit text of Shankara's commentary, the laws of euphonious combinations or samdhi have not all been strictly followed according to Panini's aphorisms, the aim has rather to enable readers not versed in the intricacies of Sanskrit grammar to get familiar with the original text.

With text in Devanagri, English rendering and index of first lines of verses.
This edition is especially sought after by those who want Sankara's commentary.

The translator is a retired professor of Sanskrit and an accomplished scholar in Vedanta Philosophy