Hatch, John, author
Frederick A. Praeger, 1962
Buku Teks
edited by S.L. Poplai
Asia Publishing House, 1955
Buku Teks
Asian Relations Organization; edited by S.L. Poplai
Asia Publishing House, 1955
Buku Teks
Secretary of State forInformation and Tourism, 1973
Buku Teks
Jayasuriya, Shihan De Silva, author
Tauris Academic Studies, 2008
Buku Teks