Buku Teks
Faure, Edgar, author
Unesco, 1973
Buku Teks
Faure, Edgar, author
Unesco, 1973
Buku Teks
edited by Anna De Fina, Deborah Schffrin and Michael Baberg
Cambridge University Press, 2007
Buku Teks
Schiffrin, Deborah, author
Blackwell , 2000
Buku Teks