Fifty years of Indian parliament
edited by G.C. Malhotra
Lok Sabha Secretariiat, 2002.
 Buku Teks SO
Scott-James, R.A.
Fifty years of English literature 1900-1950
Longman, 1951
 Buku Teks SO
Seymour, J.
Electronic devices and components
Longman, 1988
 Buku Teks
Metzger, Daniel L.
Electronic components, instruments, and troubleshooting
Prentice-Hall, 1981
 Buku Teks SO
Wedlock, Bruce D.
Electronic components and measurements
Prentice-Hall, 1969
 Buku Teks SO