DOAB Directory of Open Access Books
2026
DOAJ: Directory of Open Access Journals
2014-01-01 ~ 현재
EBSCO Open Access Journals
2000-01-01 ~ 현재
DOAB Directory of Open Access Books
2025
DOAB Directory of Open Access Books
2022
EBSCO Open Access Journals
2009-01-01 ~ 2016-12-31
Wiley Online Library Open Access
2009-01-01 ~ 2016-12-31
ScienceDirect
1990
DOAB Directory of Open Access Books
2022
ScienceDirect
1988
ScienceDirect
2016