DOAB Directory of Open Access Books
2011
DOAB Directory of Open Access Books
2025
DOAB Directory of Open Access Books
2025
DOAB Directory of Open Access Books
2023
DOAB Directory of Open Access Books
2026
Wiley Online Library Open Access
2014-01-01 ~ 2015-12-31
DOAB Directory of Open Access Books
2024
DOAJ: Directory of Open Access Journals
2021-01-01 ~ 현재
Wiley Online Library Open Access
2014-01-01 ~ 2015-12-31
ScienceDirect
2005-01-01 ~ 현재