edited by Clement Semmler and Derek Whitelock
F.W. Cheshire, 1966
Buku Teks
Meisel, Perry, author
Routledge, 2007
Buku Teks
Michael Frederick Hofmeyr, author
Graduate School of Language and Culture, Osaka University, 2018
Artikel Jurnal
Castle, Gregory, author
Blackwell, 2007
Buku Teks
Bertens, Hans, author
Taylor & Francis Group, 2008
Buku Teks