DOAJ: Directory of Open Access Journals
2012-01-01 ~ 현재
PubMed Central (PMC)
2012-01-01 ~ 2015-12-31
EBSCO Open Access Journals
1967-01-01 ~ 현재
De Gruyter Brill Open Journals
2013-09-08 ~ 현재
EBSCO Open Access Journals
2016-01-01 ~ 2022-12-31
스콜라 (Scholar)
2009-01-01 ~ 2024-12-31
EBSCO Open Access Journals
1865-01-01 ~ 1908-12-31
EBSCO Open Access Journals
2002-01-01 ~ 현재
EBSCO Open Access Journals
2002-01-01 ~ 현재
DOAJ: Directory of Open Access Journals
2010-01-01 ~ 현재
DOAJ: Directory of Open Access Journals
2011-01-01 ~ 현재