Hervey, Sandor G. J.
Routledge, , 1992
Buku Teks
Paenson, Isaac, author
Pergamon Press, 1990
Buku Referensi
Paenson, Isaac, author
Pergamon Press, 1990
Buku Referensi
Laski, Harold J., author
George Allen and Unwin, 1948
Buku Teks
Laski, Harold J., author
George Allen and Unwin, 1950
Buku Teks