Gladhys Elliona Syahutari, author
2017
UI - Skripsi (Membership)
Kristin Liu, author
Gramedia Pustaka Utama, 2015
Buku Teks
Breus, Michael, author
Mizan Media Utama, 2017
Buku Teks
Maria Santi Widyartini, author
2016
UI - Tesis (Membership)
Harefa, Andrias, 1964-, author
Kompas, 2001
Buku Teks