English partial translation of *Upāyahṛdayaśāstra (*Prayogasāraśāstra)
Gillon, Brendan, and Shoryu Katsura. 2016. “English Translation of the *Upāyahṛdaya (pt. 1).” Journal of Indian and Tibetan Studies (Indogaku Chibettogaku Kenkyu), no. 20: 195–232.
- This relation of Gillon and Katsura 2016 to the *Upāyahṛdayaśāstra (*Prayogasāraśāstra) was added from an external source.