Lal, Bansi
Atma Ram & Sons, 1962
Buku Teks
Rich, Barnett, author
McGraw-Hill, 1963
Buku Teks
Coxeter, H. S. M.
John Wiley & Sons, 1980
Buku Teks
Bowyer, Adrian
Butterworth, 1983
Buku Teks
Brumfiel, Charles Francis, 1914-, author
Addison-Wesley, 1962
Buku Teks