Arasartnam, Sinnappah
Prentice-Hall, 1964
Buku Teks
Knox, Robert
Ceylon Tisara Prakasakayo, 1966
Buku Teks
Ludowyk, E. F. G.
Faber and Faber, 1962
Buku Teks
Ludowyk, E. F. C.
Frederick A. Praeger, [1966]
Buku Teks
Dewaraja, Lorna Srimanthie
Lake House Investments, 1972
Buku Teks
Amerasinghe, Anthony Ranjit Bevis, author
Lake House Investments, 1971
Buku Teks