Halm, George N
Feffer and Simons, 1968
Buku Teks
Zimbalist, Andrew, author
Academic Press, 1984
Buku Teks
Academic Press, 2015
eBooks
edited by Tadashi Matsuzaki and Toru Yanagihara
Faculty of Economics Hosei University, 1996
Buku Teks
Dalton, George, author
Penguin Education, 1975
Buku Teks