Melvin, Michael, author
South Western Cengage Learning, 2013
Buku Teks
Mankiw, N. Gregory, author
Cengage Learning, 2013
Buku Teks
Frank, Robert H., author
McGraw-Hill, 2001
Buku Teks
Mankiw, N. Gregory, author
Harcourt College, 2001
Buku Teks
Fairchild, Fred Rogers, author
Macmillan, 1954
Buku Teks