Columbia subject headings:
Qualitative research.
Quantitative research.
Social sciences--Methodology.
Social sciences--Research.
Sociology--Methodology.
Sociology--Research.
Harvard subject headings:
Qualitative research.
Quantitative research.
Social sciences--Methodology
Social sciences--Research
Sociology--Methodology
Sociology--Research
Princeton subject headings:
Qualitative research.
Quantitative research.
Social sciences--Methodology.
Social sciences--Research.
Sociology--Methodology.
Sociology--Research.