Encyclopedia of survey research methods
Sage Publications, 2008
eBooks
Research methods: guidance for postgraduates
edited by Tony Greenfield
Arnold, 1996
Buku Teks SO
Yin, Robert K.
Case study research: design and methods
SAGE Publication, 1989
Buku Teks SO
Yin, Robert K.
Case study research: design and methods
SAGE Publication, 1985
Buku Teks SO
Goode, William J.
Methods in social research
McGraw-Hill, 1952
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