Gittler, Joseph B.
John Wiley & Sons, 1956
Buku Teks
Richards, Jeffrey
Routledge, 1994
Buku Teks
Dan Soen, Mally Shechory, Sarah Ben David, editors
Nova Science Publisher's,, 2012
Buku Teks
Crapo, Richley H., author
McGraw-Hill, 2002
Buku Teks
Spinoza, Baruch
BobbsMerrill, 1958
Buku Teks