Cambridge University Press, 2010
eBooks
Ladefoged, Peter
Blackwell publisher, 2001
Buku Teks
Editia Herningtias
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2012
UI - Skripsi (Open)
Ladefoged, Peter
Blackwell Publishing, 2003
Buku Teks
General editor E.F. Konrad Koerner
John Benjamins B.V. , 1979
Buku Teks