Bhagavad-Gita with the Commentary of Sri Shankaracharya, translated to English by Alladi Mahadeva Sastri : Shankaracharya, Alladi Mahadeva Sastri : Free Download, Borrow, and Streaming : Internet Archive
Bhagavad Gita Grammar. Three volumes : Harivenu das : Free Download, Borrow, and Streaming : Internet Archive