According to some schools, the proper means of knowledge must rely on the three pramanas of perception, inference and testimony. Which of these schools do so?

Sankhya, Yoga and two sub-schools of Vedanta rest knowledge on three pramanas.

These three are perception, inference and verbal testimony.

Sankhya reduces every other means back to these three sources.

Yoga follows Sankhya's epistemology and admits the same three.

Since each listed school accepts exactly these three, all of them are included.