Ayer, Alfred Jules, 1910-1989
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Buku Teks SO
James, William
Meridian Books , 1959
Buku Teks
by Simon Critchle ... [et al.] ; edited by Chantal Mouffe
Routledge, 1996
Buku Teks SO
Peirce, Neal R.
W. W. Norton, 1983
Buku Teks
edited by Rusell B. Goodman
Routledge, 2005
Buku Teks