Moore, David S.
WH. Freeman and Company, 2000
Multimedia
Moore, David S.
W.H. Freeman and Company, 2000
Buku Teks
Michael S. Lewis-Beck, editor
Sage Publications, 1993
Buku Referensi
John Wiley and Sons, Inc., 1967
Buku Teks
Hoel, Paul Gerhard, 1905-, author
Wiley, 1982
Buku Teks