Sauter, David, author
Delmar/Cengage Learning, 2011
Buku Teks
Steiner, Frederick R., author
McGraw-Hill, 2000
Buku Teks
Daniela Dantos Quartino, author
LOFT Publications S.L., 2011
Buku Teks
Marsh, William M., author
John Wiley & Sons, 1998
Buku Teks
Austin, Richard L., author
Van Nostrand Reinhold, 1984
Buku Teks