Kubler-Ross, Elisabeth, author
Macmillan, 1981
Buku Teks
Yuwen Li
Martinus Nijhoff Publishers, 1994
Buku Teks
Adhika A. Tama, author
Universitas Indonesia, 2011
UI - Skripsi (Open)
Setyo Sarwanto Moersidik, author
Fakultas Teknik Universitas Indonesia, 1995
UI - Laporan Penelitian
Satriawan Wiguna, author
Fakultas Teknik Universitas Indonesia, 2011
UI - Skripsi (Open)