Ariyaratna, A. T., & Ratnapala, N. (1980). Collected works. Sarvodaya Research Institute.
Chicago Style aipamenaAriyaratna, A. T., and Nandasena Ratnapala. Collected Works. Dehiwala, Sri Lanka: Sarvodaya Research Institute, 1980.
MLA aipamenaAriyaratna, A. T., and Nandasena Ratnapala. Collected Works. Sarvodaya Research Institute, 1980.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.