Burden, Richard L., author
Brooks/Cole Cengage Learning, 2011
Buku Teks
Kiusalaas, Jaan
Cambridge University Press , 2010
Buku Teks
Gerald, Curtis F., author
Addison-Wesley, 1994
Buku Teks
Hildebrand, Francis Begnaud, author
Tata McGraw-Hill, 1974
Buku Teks
Atkinson, Kendall E., author
John Wiley, 1993
Buku Teks