Johnson, John M.
Doing field research
The Free Press, 1975
 Buku Teks SO
Cohen, Nathan Edward
Social work and social problems
National Ass. of Workker, 1964
 Buku Teks
Systems research : methodological problems
edited by J.M. Gvishiani
Pergamon Press, 1984
 Buku Teks
Rossman, Gretchen B.
Learning in the field : an introduction to qualitative research
Sage, 2003
 Buku Teks SO
Rossman, Gretchen B.
Learning in the field : an introduction to qualitative research
Sage, 2003
 Buku Teks SO