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Buku Teks
Skousen, Mark, author
Routledge, 2015
eBooks
Iwan Jaya Azis, 1953-, author
Bank Indonesia Insitute, 2019
Artikel Jurnal
Heidegger, Martin, author
State University of New York Press, 1996
Buku Teks
Tracy, Brian, author
Amacom, 2004
Buku Teks