EBSCO Open Access Journals
2004-01-01 ~ 현재
DOAB Directory of Open Access Books
2024
OAPEN (Open Access Publishing in European Networks)
2024
Brill Open e-Books
2025
DOAJ: Directory of Open Access Journals
2011-01-01 ~ 현재
DOAB Directory of Open Access Books
2009
DOAB Directory of Open Access Books
2016
DOAB Directory of Open Access Books
2017
DOAB Directory of Open Access Books
2024
Books at JSTOR: Open Access
2024
DOAB Directory of Open Access Books
2018
De Gruyter Brill Open Access eBooks
2017