Richards, Robert William, author
Dow Jones-Irwin, 1986
Buku Referensi
Bernard, Josef, author
Dow Jones-Irwin, 1986
Buku Referensi
Rosen, Lawrence R., author
Dow Jones-Irwin, 1974
Buku Referensi
Gastineau, Gary L., author
Frank J. Fabozzi Associates, 1996
Buku Referensi
Hallman, G. Victor, author
McGraw-Hill, 1987
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