Anmol Publications, 1997
Buku Referensi
Houtte, Hans Van
Sweet & Maxewell, 1995
Buku Referensi
edited by György Haraszti
Sijthoff and Noordhoff, 1981
Buku Teks
edited by Vinod K. Lall, Danial Khemchand
Anmol Publications, 1997
Buku Referensi
Fenwick, Charles G.
Appleton-Century-Crofts, 1948
Buku Teks