Brooks, Geraldine, author
Penguin Books, 2015
Buku Teks
Kwan, Kevin, author
Doubleday, 2017
Buku Teks
Fathia Husna, author
2014
UI - Makalah dan Kertas Kerja
Sarip Hidayat, author
2012
UI - Tesis (Open)
Umar Junus, author
Universiti Malaya, 1974
Buku Teks