Gruber, Jeffrey S.
North-Holland , 1976
Buku Teks
Cambridge University Press, 1992
Buku Teks
Joan Bresnan, Ash Asudeh, Ida Toivonen, Stephen
Wiley-Blackwell, 2016
Buku Teks
Cambridge University Press, 2003
eBooks
Kroeger, Paul R.
Cambridge University Press, 2006
Buku Teks