Bell, Judith
Doing your research project: a guide for first time researchers in education and social science
Open University Press, 1993
 Buku Teks
Berg, Bruce Lawrence, 1954-
Qualitative reseach methods for the social sciences
Allyn and Bacon, 1989
 Buku Teks
Berg, Bruce Lawrence, 1954-
Qualitative research methods for the social sciences
Pearson, 2014
 Buku Teks
Bell, Judith
Doing your research project : a guide for first-time researchers
McGraw-Hill Education, 2014
 Buku Teks
Judd, Charles M.
Research methods in social relations
Methuen, 1991
 Buku Teks