Gert J. J. Biesta
Springer, 2012
eBooks
Institute for Scientific co-coperation, [date of publication not identified]
Majalah, Jurnal, Buletin
United Nations Educational, Scientific and Cultural Organization
Unesco, 1971
Buku Referensi
Lee, Yoo-ran
Seoul Selection, 2008
Buku Teks
MIT Press, 1992
Buku Teks