Johnson, Harry G., author
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Buku Teks
Robertson, D.H., author
Staples Press, 1948
Buku Teks
Pigou, A.C. (Arthur Cecil), 1877-1959, author
Macmillan, 1952
Buku Teks
Directorate of Economic Research and Monetary Policy, Bank Indonesia, 2019
Majalah, Jurnal, Buletin
Smithin, John, author
Edward Elgar, 2003
Buku Teks