Nur Rochma Amaliah, author
2012
UI - Tesis (Membership)
Rizki Hakiki Valentine, author
2017
UI - Tesis (Membership)
Japan Times, 1982
Buku Teks
Humphreys, Christmas, author
Penguin Books, 1985
Buku Referensi
Saunders, E. Dale
University of Pennsylvania, 1964
Buku Teks