Barrow, Mike, author
Prentice-Hall, 2001
Buku Teks
Barrow, Michael, author
Longman , 1997
Buku Teks
Bancroft, Gordon, author
McGraw-Hill , 1981
Buku Teks
Anderson, David R., author
Thomson, 2008
Buku Teks
Kazmier, Leonard J., author
McGraw-Hill, 1984
Buku Teks