Feldstein, Paul J., author
John Wiley & Sons, 1988
Buku Teks
Dewar, Diane M., author
Jones & Bartlett Learning, 2010
Buku Teks
Lorna Guinness, Virginia Wiseman
McGraw-Hill, 2011
Buku Teks
edited by Andrew M. Jones
Edward Elgar, 2012
Buku Teks
Feldstein, Paul J., author
Delmar, 2012
Buku Teks