Allwood, Jens
Cambridge University Press, 1995
Buku Teks
Grayling, A. C.
Blackwell Publishers, 1997
Buku Teks
edited by Witold Marciszewski
Martinus Nijhoff Publishers, 1981
Buku Referensi
Katz, Jerrold J.
George Allen and Unwin, 1972
Buku Teks
Vendler, Zeno
Cornell University Press, [1967]
Buku Teks