Khoiriyatul Fajriyah, author
Fakultas Ilmu Budaya Universitas Mulawarman, 2017
Artikel Jurnal
edited by Louis G. Locke, William M. Gibson, George Arms
Holt, Rinehart and Winston, 1959
Buku Teks
Ida Sundari Husen, author
UI-Press, 2004
UI - Pidato
Hasbullah, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2000
UI - Tesis (Membership)
Widdowson, Peter, author
Routledge, 1999
Buku Teks