Research design : qualitative, quantitative, and mixed methods approaches / Creswell, John W

Introduction to social research : quantitative & qualitative approaches / Punch, Keith.

Research methodology : a step-by-step guide for beginners / Kumar, Ranjit, author.

Research methodology : business and management contexts / Bryman, Alan, author.

Research at grass roots : for the social sciences and human services professions / De Vos, A. S.

First steps in research / Maree, Kobus, 1951-