LeRoy, Stephen F., author
Cambridge University Press, 2014
Buku Teks
Frank, Robert H., author
McGraw-Hill, 2001
Buku Teks
Case, Karl E., author
Pearson, Prentice Hall, 2009
Buku Teks
Mankiw, N. Gregory, author
Harcout College, 1998
Buku Teks
Case, Karl E., author
Prentice-Hall, 2004
Buku Teks