Bell, Judith
Doing your research project : a guide for first-time researchers
McGraw-Hill Education, 2014
 Buku Teks
Foundations for research: methods of inquiry in education and the social sciences
New jersey, 2004
 Buku Teks
Methodology of social science research / edited by Sugata Dasgupta
Impex India, 1967
 Buku Teks
White, Patrick, 1971-
Developing research questions : a guide for social scientists
Palgrave Macmillan, 2009
 Buku Teks
Judd, Charles M.
Research methods in social relations
Methuen, 1991
 Buku Teks