Wiarda, Howard J., author
Westview Press, 1992
Buku Teks
Farah Ayu Hadianty, author
2017
UI - Skripsi (Membership)
Asriningrum Pujilestari, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2017
UI - Tesis (Membership)
Wilson, Jo, author
Lancaster Quay Publishing , 1994
Buku Teks
Pratiwi Dian Ekowati, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2015
UI - Skripsi (Membership)