Woodford, A.O., author
W.H. Freeman, 1965
Buku Teks
Lehmann, Winfred P., author
Holt, Rinehart and Winston, 1962
Buku Teks
East, W. Gordon, author
E.P. Dutton, 1950
Buku Teks
Stokes, William Lee, 1915-, author
Prentice-Hall, 1966
Buku Teks
Shushtery, A. M. A.
The Bangalore Press, 1954
Buku Teks