Ladefoged, Peter
Blackwell Publishing, 2003
Buku Teks
Ladefoged, Peter
Blackwell publisher, 2001
Buku Teks
Zsiga, Elizabeth C.
West Sussex Wiley-Blackwell, 2013
Buku Teks
Cambridge University Press, 2010
eBooks
Pereltsvaig, Asya, 1972-
Cambridge University Press, 2012
Buku Teks