John Wiley & Sons, 1980
Buku Teks
Soni, M.L.
Delhi: Shamput Rai and Sons, 1977
Buku Teks
Weedy, B.M., author
John Wiley & Sons, 1993
Buku Teks
Stevenson, William D., author
McGraw-Hill, 1975
Buku Teks
Stevenson, William D., author
McGraw-Hill, 1982
Buku Teks