Art, Robert J
Pearson, 2017
Buku Teks
Sen, Samita, author
Oxford University Press, 2016
eBooks
Takeshi Nishimura, author
Graduate School of Economics Kyoto University, 2013
Artikel Jurnal
Schnall, David J
Praeger Publisher, 1979
Buku Teks
Sharp, Walter R.
Rinehart, 1944
Buku Teks