Octoria Utami
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2002
UI - Skripsi (Membership)
KPMG IFRG Limited
KPMG IFRG Limited, 2011
Buku Teks
English, John W. author
Allyn and Bacon, 1993
Buku Teks
Roberts, Ian
Oxrord University Press, 2007
Buku Teks
Gorrell, Paul. author
Cambridge University Press, 2006
Buku Teks