Steiner, Frederick R., author
McGraw-Hill, 1999
Buku Referensi
Steiner, Frederick R., author
McGraw-Hill, 2000
Buku Teks
AVI Publishing Company, 1984
Buku Teks
Marsh, William M., author
John Wiley & Sons, 1998
Buku Teks
Edited by Nadia Amoroso
Routledge, cop, 2012
Buku Teks