Katz, Jerrold J., author
Harper & Row, 1966
Buku Teks
Barry Lee, editor
Continuum International Pub. Group, 2011
Buku Teks
edited by Bob Hale and Crispin Wright
Blackwell, 1997
Buku Teks
edited by Sidney Hook
University Press, 1969
Buku Teks
Schlegel, Friedrich Von, author
Cambridge University Press, 2015
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