DOAB Directory of Open Access Books
2010
DOAJ: Directory of Open Access Journals
2007-01-01 ~ 현재
OAPEN (Open Access Publishing in European Networks)
2023
DOAB Directory of Open Access Books
2023
De Gruyter Brill Open Access eBooks
2023
DOAB Directory of Open Access Books
2025
Project Muse Open Access ebooks
2025
OAPEN (Open Access Publishing in European Networks)
2025
DOAB Directory of Open Access Books
2025
Books at JSTOR: Open Access
2025
DOAB Directory of Open Access Books
2019
Books at JSTOR: Open Access
2019
DOAB Directory of Open Access Books
1992
Books at JSTOR: Open Access
1992
Project Muse Open Access ebooks
1992
MIT Press Direct to Open Backfile Complete Monographs
1986
OAPEN (Open Access Publishing in European Networks)
2017
DOAB Directory of Open Access Books
2017
De Gruyter Brill Open Access eBooks
2017
OAPEN (Open Access Publishing in European Networks)
2025
DOAB Directory of Open Access Books
2025