Douglas, Dan
Assessing language for specific purposes
Cambridge University Press, 2000
 Buku Teks
Revesz, G.
The Origins and prehistory of language
Longman, 1956
 Buku Teks SO
The Language politics of "English Fever" in South Korea
 Artikel Jurnal
Kristanti
Analisis kecenderungan pola gramatikal puisi-puisi korea dalam buku teks pelajaran bahasa Korea untuk orang asing = Analysis of grammatical pattern tendency in the poems used in Korean language textbook for foreign learners
[, Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia], 2014
 UI - Skripsi Membership
Koester, Almut
The language of work
Routledge, 2006
 Buku Teks