Irwin, 1996
Buku Referensi
Parulian, Angelina Risma Lasma, author
2014
UI - Skripsi (Membership)
Oktavia, author
Universitas Indonesia, 2017
UI - Disertasi (Membership)
Sitinjak, Ellis Veronika, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2018
UI - Tesis (Membership)
Universitas Indonesia, 2007
UI - Skripsi (Membership)