Philippe Grange, author
Faculty of Humanities University of Indonesia, 2015
Artikel Jurnal
Wojciechowski, Jerzy A.
Council for research in values and philosophy, [Date of publication not identified]
Buku Teks SO
Dash, Madhab C.
Tata McGraw-Hill, 2003
Buku Teks
MacKinnon, Kathy; Hatta, Gusti; Halim, Hakiman; Mangalik, Arthur
Periplus Editions, 1996
Buku Referensi
Newman, Edward I.
Blackwell Science, 1993
Buku Teks