Beal, Tim, author
Pluto Press, 2005
Buku Teks
Claudea Ryandini, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2017
UI - Skripsi Membership
Foreign Languages Publishing House , 1960
Buku Teks
Nasution, A.N., author
Yayasan Dwikarya, 1965
Buku Teks
International Cultural Society of Korea, 1983
Buku Teks