Nanyang Technological University , [date of publication not identified]
Buku Teks
edited by Albert R. Meyer
MIT Press, 1991
Buku Teks
Rourke Publishing LLC, 2009
Buku Referensi
Verawati Puspitaningtyas
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2014
UI - Tesis (Membership)
Ristek, editor
Gramedia Pustaka Utama, 2009
Buku Teks