DOAJ: Directory of Open Access Journals
2018-01-01 ~ 현재
EDP Open Access
2018-01-01 ~ 2023-12-31
DOAB Directory of Open Access Books
2020
De Gruyter Brill Open Access eBooks
2023
International Monetary Fund (IMF) eLibrary
2025
DOAB Directory of Open Access Books
2020
De Gruyter Brill Open Access eBooks
2020
OAPEN (Open Access Publishing in European Networks)
2024
DOAB Directory of Open Access Books
2024
Springer Nature Link eBooks - Fully Open Access
2024
DOAB Directory of Open Access Books
2024
Springer Nature Link eBooks - Fully Open Access
2026
DOAB Directory of Open Access Books
2022
DOAB Directory of Open Access Books
2022