DOAB Directory of Open Access Books
2023
Taylor & Francis Open
2014-01-01 ~ 2016-12-31
DOAB Directory of Open Access Books
2011
Wiley Online Library Open Access
2014-01-01 ~ 2014-12-31
DOAB Directory of Open Access Books
2025
DOAB Directory of Open Access Books
2026
DOAB Directory of Open Access Books
2024
DOAB Directory of Open Access Books
2020
DOAJ: Directory of Open Access Journals
2011-01-01 ~ 현재
EBSCO Open Access Journals
2017-01-01 ~ 현재
DOAJ: Directory of Open Access Journals
2008-01-01 ~ 현재
PubMed Central (PMC)
2023-01-01 ~ 현재