Abstracting and Indexing

Google Scholar

PKP INDEX

WorldCat

Directory of Open Access scholarly Resources (ROAD)

Directory of Research Journals Indexing

OAI-PMH - Open Archives Initiative

Semantic Scholar

Academia.edu

Asian Digital Library

BASE (Bielefeld Academic Search Engine)

Crossref

Index Copernicus

CiteFactor

PBN

ResearchBib

scilit

Scientific Indexing Services

MLA International Bibliography - Ebsco