Qualitative research.

Practical research : planning and design / Leedy, Paul D.

Qualitative research -- Methodology.

Marketing research essentials. / McDaniel, Carl, Jr., 1941-

The reviewer's guide to quantitative methods in the social sciences / Hancock, Gregory R.

Practical research and evaluation : a start-to-finish guide for practitioners / Dahlberg, Lena.

Quantitative models in marketing research / Franses, Philip Hans, 1963-

Servant leadership : developments in theory and research / Dierendonck, Dirk van, 1963-

Quantitative research.

research -- Critical appraisal and qualitative research -- Systematic reviews and evidence-based practice

results in 1955 as a research monograph edited by Friedrich Pollock. The study's qualitative results are

Social problems -- Research.