Nightingale, Kath
Prentice-Hall, 2002
Buku Teks
Muhammad Kausar Amir, author
2019
UI - Tugas Akhir
James, Simon, author
Prentice-Hall, 2000
Buku Teks
Dina Syarfina, author
2016
UI - Skripsi (Membership)
Raissa Rachmayanti, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2008
UI - Skripsi (Open)