Riehl, Heinz
McGraw-Hill, 1983
Buku Teks SO
Coyle, Brian
Chartered Institute of Bankers, 2000
Buku Teks SO
Williams, R. Tee
Elsevier, 2012
Buku Teks SO
Frankel, Jeffrey A.
University of California , 1991
Buku Teks SO
Dornbusch, Rudiger
University of California , 1988
Buku Teks SO