Introduction To Health Research Methods by Kathryn Jacobsen

Educational Research An Introduction Seventh Edition. Use to research for thesis

Introduction to Educational Research Third Edition

An Introduction To Theological Research by Cyril J. Barber

Introduction to Operations Research, Lieberman and Hillier, 8th Edition, 2005

Operations Research: An Introduction by Hamdy Taha

Operations Research A Practical Introduction

Introduction to Educational Research Fourth Edition