These e-journal collections provide access to many scholarly journals in the Humanities, but they are more limited in coverage compared to subject databases. In many cases, it's better to search subject databases to identify articles. However, when you are specifically undertaking interdisciplinary research, these two databases can be excellent starting places.
Humanities International Complete indexes over 1,200 journals in the humanities and creative arts, including many not indexed elsewhere. It is an excellent starting point especially for interdisciplinary research in the humanities.
In secondary sources, authors analyze and interpret primary source materials.
Secondary sources can be scholarly or popular. Scholarly sources (sometimes called "academic" or "peer-reviewed" sources) are written by and for experts and typically include bibliographies and citations. Popular sources are written for a general, non-expert audience and can be authored by anyone.