This chapter reviews related literature to support the study. It includes concepts, findings, and theories from other research related to the rationale for undertaking the study. This literature provides background and context and may later be confirmed, negated, or improved by the new knowledge gained from the present study. The review covers related information published in various sources as well as unpublished materials like theses. It synthesizes the main ideas from this literature and explains how the present study will address gaps and answer shortcomings identified in previous research on the same topic.