1. Harṣavardhana Title: Harṣavardhana Contributors: Duggala, Baikunthanātha Publication: Dillī : Youngman, 1949.
2. Samudragupta Title: Samudragupta Contributors: Duggala, Baikunthanātha Publication: Dillī: Ātmā Rāma, 1957.