Elsevier Science Publishers B.V, 2018
Majalah, Jurnal, Buletin
Elsevier scine publisher , 2018
Majalah, Jurnal, Buletin
The University of Chicago Press, 2018
Majalah, Jurnal, Buletin
Lipsey, Richard G., 1928-, author
Harper Collin, 1996
Buku Teks
Adreson, W. H. Locke, author
Prentice Hall of India, 1986
Buku Teks