DOAB Directory of Open Access Books
2022
Books at JSTOR: Open Access
2022
OAPEN (Open Access Publishing in European Networks)
2020
DOAB Directory of Open Access Books
2020
OAPEN (Open Access Publishing in European Networks)
2005
Taylor & Francis eBooks (Open Access)
1999
DOAB Directory of Open Access Books
2005
ScienceDirect
1996
ScienceDirect
2024
ScienceDirect
2023
DOAB Directory of Open Access Books
2016
DOAB Directory of Open Access Books
2023
EBSCO Open Access Journals
2021-03-01 ~ 현재