Research Methods Knowledge Base by William Trochim

Introduction to Behavioral Research Methods by Leary

Research Methods for Social Workers by Samuel Faulkner

Sage Qualitative Research Methods Series & Quantitative Applications Social Scie

Social Research Methods by H (Henry) Russell Bernard

Essential Research Methods For Social Work - by Rubin

Business Research Methods - by William G Zikmund

Understanding Research Methods Ninth Edition by Mildred L. Patten