Lior Gideon
Handbook of survey methodology for the social sciences
Springer Science, 2012
 eBooks
Judd, Charles M.
Research methods in social relations
Methuen, 1991
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Research methods in social relations
Louise H. Kidder
Holt, Rinehart and Winston, 1981
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Lee, Raymond M.
Unobtrusive methods in social research
Open University Press, 2000
 Buku Teks SO
Research methods in social relations
by Claire Selltiz ... [and others]
Methuen, 1965
 Buku Teks SO