Trudgill, Peter
Sociolinguistics : an introduction to language and society / Peter Trudgill
Penguin, 1995
 Buku Teks
Dasar dasar linguistik umum
disunting oleh Djoko Kentjono
Fakultas sastra UI, 1984
 Buku Teks SO
Sari Kusuma Dewi
Alih kode dalam "Ini Talk Show" di NET TV = Code switching in "Ini Talk Show" at NET TV
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2016
 UI - Skripsi Membership
Carter, Ronald
Language and creativity: the art of common talk
Routledge, 2004
 Buku Teks
Murray, Neil
Standards of english in higher education: issues, challenges and strategies
Cambridge University Press, 2015
 eBooks