Google Scholar

Neliti

Crossref

Onesearch

Academic Resource Index

PKP Index

ROAD

BASE

Scilit

Issuu

Research Gate

Semantic Scholar

CORE

Dimensions

Asos Indeks

Worldcat

OpenAIRE

Sciencegate

Busca Integrada

Mount Allison University Libraries

Integro

Umass Lowell

University of Arizona Libraries

Microsoft Academic

The University of Sheffield

Leiden University Libraries

JISC: Library Hub Discover

University of Washinton

Garuda