Dalby, Andrew
Language in danger
A. Lane, 2002
 Buku Teks
Siti Suharsih
Pemertahanan Bahasa Jawa dialek Banten di Provinsi Banten = Banten Javanese Language Maintenance in Banten Province
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2019
 UI - Disertasi Membership
Pauwels, Anne
Language maintenance and shift
NY Cambridge University Press, 2016
 Buku Teks
A pattern language
Christopher Alexander, Sara Ishikawa, Murray Silverstein, Max Jacobson, Ingrid Fiksdahl-King, Sholomo Angel
Oxford University Press, 1977
 Buku Referensi
Douglas, Dan
Assessing language for specific purposes
Cambridge University Press, 2000
 Buku Teks