DOAB Directory of Open Access Books
2023
DOAB Directory of Open Access Books
2024
DOAB Directory of Open Access Books
2023
ScienceDirect
2025
ScienceDirect
2020
ScienceDirect
2021
ScienceDirect
2008
ScienceDirect
2017
OAPEN (Open Access Publishing in European Networks)
2021
DOAB Directory of Open Access Books
2021
Books at JSTOR: Open Access
2021
Project Muse Open Access ebooks
2021
DOAB Directory of Open Access Books
2012