edited by Oscar Uribe-Villegas
Mouton, 1977
Buku Teks
Wardhaugh, Ronald, author
Blackwell Publishers, 2002
Buku Teks
Coulmas, Florian, author
Blackwell Publishers, 1998
Buku Teks
Meyerhoff, Miriam, author
Rontledge, 2006
Buku Teks
Wardhaugh, Ronald, author
Wiley-Blackwell, 2010
Buku Teks