Heller, Monica
Routledge, Taylor & Francis Group, 2018
Buku Teks
Cambridge University Press, 1997
eBooks
Fitri Yani Jalil
Faculty of Economics and Business State Islamic University (UIN) Syarif Hidayatullah, 2018
Artikel Jurnal
Hernandez-Campoy, Juan Manuel
Wiley Blackwell, 2016
Buku Teks
Anthony, Robert Newton, 1916-2006
Harvard University, 1952
Buku Teks