The Hague, 1972
Buku Teks
Haugen, Einar
Stanford University Press, 1972
Buku Teks
Fishman, Joshua A., author
Newbury House Publishers, 1972
Buku Teks
Cambridge University Press, 2009
eBooks
Titis Ary Wulandari, author
2013
UI - Makalah dan Kertas Kerja