Liu, Shia-Ling
Kuang Lu Publishing , 1988
Buku Teks
Sussman, Barry
New American Library, 1974
Buku Teks
Nabila Rozano
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2014
UI - Skripsi Membership
Summer Institute of Linguistics (Philippines) : Linguistic Society of the Philippines, 1981
Buku Teks SO
Gribbin, John
Penguin Books, 1997
Buku Teks