Tagliamonte, Sali A.
Cambridge University Press, 2009
eBooks
Maguire, Warren
Cambridge University Press, 2011
eBooks
Brouwer, Dede
Foris Publications, 1989
Buku Teks
Chambers, J.K.
Wiley-Blackwell, 2009
Buku Teks SO
Adam Maulana
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2012
UI - Skripsi Open