edited by David Denison, Ricardo Bermudez-Otero, Chris McCully, Emma Moore with the assistance of Ayumi Miura
Cambridge University Press, 2012
eBooks
edited by Peter Trudgill and J.K. Chambers
Longman, 1991
Buku Teks
Wolfram, Walt, 1941-
Wiley Balckwell, 2016
Buku Teks
Heike Pichler, editor
Cambridge University Press, 2016
Buku Teks
Cambridge University Press, 2009
eBooks