Ayer, Alfred Jules, 1910-1989
Penguin Books, 1980
Buku Teks
Balukh, Jermy I.
University of Indonesia, Faculty of Humanities, 2015
Artikel Jurnal
edited by Witold Marciszewski
Martinus Nijhoff Publishers, 1981
Buku Referensi
Routledge, 1993
Buku Teks
edited by Bob Hale and Crispin Wright
Blackwell, 1997
Buku Teks