Morrison, J.L.M., author
Harlow Essex, UK ELBS, 1970
Buku Teks
Mittal, R., author
SSMB, 1996
Buku Teks
Vijaywargiya, U.S., author
S.S. Mubarak and Brothers , 1996
Buku Teks
Reichert, Jonathan F., author
Prentice-Hall, 1991
Buku Teks
Arya, Atam Parkash, author
McGraw-Hill, 1990
Buku Teks