Research Methods Knowledge Base by William Trochim

Understanding Research Methods Ninth Edition by Mildred L. Patten

Research Methods in Health: Foundations for Evidence-based Practice by Oxford...

Social Work Research and Evaluation by Richard Grinnell

The Research Methods Knowledge Base by William M K Trochim

College Textbook Research Methods & Statistics In Psychology By Beins & McCarty.

Survey Research Methods by Fowler

Research Design : Qualitative, Quantitative, and Mixed Methods Approaches by J.