누리미디어 (DBPia)
1996-01-01 ~ 2011-12-31
누리미디어 (DBPia)
2008-01-01 ~ 2008-12-31
Project Muse Open Access ebooks
2005
ScienceDirect
2015
DOAB Directory of Open Access Books
2021
DOAB Directory of Open Access Books
2010
Books at JSTOR: Open Access
2010
DOAB Directory of Open Access Books
2023
DOAB Directory of Open Access Books
2021
DOAB Directory of Open Access Books
2023