Shannon, Thomas A.
Gramedia Pustaka Utama, 1995
Buku Teks
Holland, Stephen, 1963-
Polity Press, 2017
Buku Teks
Beyleveld, Deryck
Oxford University Press, 2001
Buku Teks
Wiley Blackwell, 2012
Buku Teks
edited by Elsie L. Bandman and Bertram Bandman
Litle Brown, 1978
Buku Teks