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
Pratt, Brian
Choosing research methods: data collection for development workers
Oxfam, 1992
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Galtung, Johan
Theory and methods of social research
George Allen and Unwin, 1969
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Goode, William J.
Methods in social research
McGraw-Hill, 1952
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