Pricewaterhouse coopers, 2011
Buku Referensi
Lewis, Richard, author
Pitman Books, 1983
Buku Teks
Mielke, David E., author
John Wiley & Sons, 1986
Buku Teks
Feny Daruny, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2014
UI - Tesis (Membership)
Feny Daruny, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2014
UI - Tesis (Membership)