Retno Wulandari
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1993
UI - Skripsi Membership
Zulfia Hanum Alfi Syahr
Research and Development Agency Ministry of Home Affairs, 2018
Artikel Jurnal
Costantino Thanos, Francesca Borri, Leonardo Candela, editor
Springer, 2007
Buku Teks
Gill, John
Paul Chapman Publishing, 1991
Buku Teks
Gerstenfeld, Arthur
California Addison-Wesley Publishing , 1970
Buku Teks