Lial, Margaret L.
Pearson - Addison Wesley, 2008
Buku Teks
Harshbarger, Ronald J.
Heath, 1990
Buku Teks
Golstein, Larry J.
Prentice-Hall, 2001
Buku Teks
Hildebrand, Francis Begnaud
Prentice-Hall, 1976
Buku Teks
Hildebrand, Francis Begnaud
Prentice Hall of India, 1977
Buku Teks