Theraja, B.L., author
S. Chand, 1982
Buku Teks
Dhogal, P.S., author
Tata McGraw-Hill, 1995
Buku Teks
Chapman, K.S., author
Edward Arnold, 1964
Buku Teks
Carlson, A. Bruce, author
Addison-Wesley, 1981
Buku Teks
Korn, Granino A., author
McGraw-Hill, 1965
Buku Teks