Babbie, Earl R.
Babbie's research writer CD-ROM with chapter tutorials
Thomson/Wadsworth, 2004
Multimedia
Babbie, Earl R.
Babbie's research writer CD-ROM with chapter tutorials
Thomson/Wadsworth, 2004
Multimedia
Estolas, Josefina V.
Fundamentas of research
Miranda, 1973
Buku Teks SO
Fowler, Floyd J.
Survey research methods
Sage, 2002
Buku Teks SO
Wilkes, F.M.
Elements of operational research
McGraw-Hill, 1987
Buku Teks