Furness, Raymond, author
Routledge , 1997
Buku Teks
Moi, Toril, author
Routledge, 1985
Buku Teks
Endres, Elisabeth
Taschenbuch Verlag, 1975
Buku Teks
Masrurih, author
2009
UI - Tesis (Open)
Unwin, Stanley, author
Perpustakaan Perguruan Kementerian Pendidikan dan Kebudayaan, 1954
Buku Teks