DOAB Directory of Open Access Books
2024
DOAB Directory of Open Access Books
2025
DOAB Directory of Open Access Books
2019
ScienceDirect
2022
DOAB Directory of Open Access Books
2023
DOAB Directory of Open Access Books
2023
ScienceDirect
1996
ScienceDirect
2021-05-01 ~ 현재
EBSCO Open Access Journals
2022-01-01 ~ 현재
Wiley Online Library Open Access
2009-01-01 ~ 2024-12-31