Palmer, E.H.
Routledge & Kegan Paul, 1956
Buku Referensi
Ram Narain Lal Publisher, 1947
Buku Referensi
Steingass, F.
Kegan Paul, Trench, Trubner & Co., 1947
Buku Referensi
Levy, Reuben
Hutchinson's University Library, 1951
Buku Teks
Macdonell, Arthur Anthony, 1854-1930
London Oxford University Press 1924
Buku Referensi