Boyer, Rodney F.
The Benjamin, 1993
Buku Teks
Campbell, Mary K.
Brooks/Cole Cengage Learning, 2008
Buku Teks
Garrett, R. (Reginald)
Saunders College, 1995
Buku Teks
Mathews, Christopher K.
Addison-Wesley, 2000
Buku Teks
Glick, David
Appleton & lange , 1995
Buku Teks