Ariyaratna, A. T., & Ratnapala, N. (1980). Collected works. Sarvodaya Research Institute.
Dyfyniad Arddull ChicagoAriyaratna, A. T., and Nandasena Ratnapala. Collected Works. Dehiwala, Sri Lanka: Sarvodaya Research Institute, 1980.
Dyfyniad MLAAriyaratna, A. T., and Nandasena Ratnapala. Collected Works. Sarvodaya Research Institute, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.