Bartholomae, David J.
Mathematical methods in social sciences
John Wiley & Sons, 1981
 Buku Teks
Research methods in the social sciences
edited, Bridget Somekh, Cathy Lewin
Sage Publications , 2005
 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
Berg, Bruce Lawrence, 1954-
Qualitative research methods for the social sciences
Pearson, 2004
 Buku Teks