Fowler, Floyd J.
Survey research methods
Sage, 2002
Buku Teks
Pratt, Brian
Choosing research methods: data collection for development workers
Oxfam, 1992
Buku Teks
Goode, William J.
Methods in social research
McGraw-Hill, 1952
Buku Teks
Gillham, Bill
Case study research methods
Continuum , 2000
Buku Teks
Armitage, P.
Statistical methods in medical research
Blackwell Scientific Publication, 1985
Buku Teks