Lenk, John D.
McGraw-Hill, 1994
Buku Referensi
Dimas Angga Fakhri Muzhoffar
C.V. Aneka, 1995
Buku Teks
Lenk, John D.
Prentice-Hall, 1983
Buku Referensi
Zettl, Herbert
Cengage Learning, 2015
Buku Teks SO
edited by Jerry C. Whitaker
CRC Press, 2002
Buku Referensi