edited by W. Gordon East and O.H.K. Spate
Methuen, 1950
Buku Teks
Shabad, Theodore
Frederick A. Praeger, 1956
Buku Teks
Goblet, Y.M.
Prederick A. Praeger, 1955
Buku Teks
Pounds, Norman J. G.
McGraw-Hill, 1972
Buku Teks
Great Britain: Methuen & Co, 1971
Buku Teks