Specifically, Google Scholar is a search engine website but it also helpful to search for Google Books and link you to Google Books. It can be configured in settings in order to export the citation into reference works. It has included scholarly journal articles in addition to the Google Books. Along with these, you can also find other materials such as dissertations, reports, and documents. It allows you to access open academic archives and open access journals. So that, you can access to link that helps to access the full-text of an article.
Recently, some journals and magazines also included under Google Scholar Books. These are appeared in full yearly volumes and are not easily separated. It can't be configured to link to the AU electronic holdings and not able to export citations automatically to reference works. It does sell e-books for some titles and all non-copyrighted content is available to the world. Copyrighted material may have restrictions but it is still often being searched.