DOAB Directory of Open Access Books
2025
DOAB Directory of Open Access Books
2022
OAPEN (Open Access Publishing in European Networks)
2026
DOAB Directory of Open Access Books
2026
OAPEN (Open Access Publishing in European Networks)
2026
DOAB Directory of Open Access Books
2026
DOAB Directory of Open Access Books
2023
DOAJ: Directory of Open Access Journals
2009-01-01 ~ 현재
EBSCO Open Access Journals
2009-01-01 ~ 현재
Brill Open e-Books
2026
EBSCO Open Access Journals
1999-01-01 ~ 2017-12-31
DOAJ: Directory of Open Access Journals
2022-01-01 ~ 현재
OAPEN (Open Access Publishing in European Networks)
2010
Bentham Open - eBooks
2010
De Gruyter Brill Open Access eBooks
2012