Mosby, Elsevier, 2006
Buku Referensi
Yusuf Margono, author
Universitas Indonesia, 2009
UI - Skripsi (Open)
Van Hepto, Engelbert Des, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2014
UI - Skripsi (Membership)
Silaban, Dennis Hasian, author
2016
UI - Tugas Akhir
Septiani, author
2016
UI - Tesis (Membership)