edited by C.H. Philips
Oxford University Press, 1961
Buku Teks
Paranavitana, Senarat, author
Lake House Investments, 1972
Buku Teks
Knox, Robert, author
Ceylon Tisara Prakasakayo, 1966
Buku Teks
International cooperation Administration , [date of publication not identified]
Buku Teks
Mendis, V.L.B.,
Tisara Prakasakayo, 1971
Buku Teks