Irine Ayu Triningtyas, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2014
UI - Skripsi (Membership)
Buchanan, James M., author
Liberty Fund, 1999
Buku Referensi
Artikel Jurnal
Cavanaugh, Francis X.
Boston Harvard business school press 1996,
Buku Teks
Rahmat Sanjaya, author
Universitas Indonesia, 2003
UI - Tesis (Membership)