Bhandari, V. B., author
Tata McGraw-Hill, 2010
Buku Teks
Khurmi, R. S., author
Eurasia Publishing House, 1980
Buku Teks
Spotts, Merhyle Franklin
Prentice-Hall, 1998
Multimedia
Creamer, H. Robert
Addison-Wesley Pub. Co., 1984
Buku Teks
Spotts, M.F. (Merhyle Franklin), author
Prentice-Hall, 1981
Buku Teks