Encyclopedia of survey research methods
Sage Publications, 2008
eBooks
Research methods: guidance for postgraduates
edited by Tony Greenfield
Arnold, 1996
Buku Teks SO
The SAGE Encyclopedia of social science research methods
Sage Publications, 2007
eBooks
Goode, William J.
Methods in social research
McGraw-Hill, 1952
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Galtung, Johan
Theory and methods of social research
George Allen and Unwin, 1969
Buku Teks SO