White, Patrick, 1971-
Developing research questions : a guide for social scientists
Palgrave Macmillan, 2009
 Buku Teks SO
Judd, Charles M.
Research methods in social relations
Methuen, 1991
 Buku Teks
Babbie, Earl R.
Social research counts
Wadsworth and Cengage Learning, 2013 (International edition)
 Buku Teks
Babbie, Earl R.
The practice of social research
Cengage Learning, 2016
 Buku Teks
Research methods in social relations
Louise H. Kidder
Holt, Rinehart and Winston, 1981
 Buku Teks