Mooney, Gavin H.
Pearson Education, 2003
Buku Teks
Folland, Sherman
Prentice-Hall, 1997
Buku Teks
Folland, Sherman
Prentice-Hall, 2001
Buku Teks
Jacobs, Philip
Aspen Publishing, 1987
Buku Teks
Hicks, Lanis L.
Jones & Bartlett Learning, 2014
Buku Teks