Below is a list of e-book packages for the field of sociology: some are existing licenses, some packages are available because the publisher is now giving everyone access to its e-books.
If you are looking for a specific title, it's better to use sEURch, because there all publishers are covered. For more discipline specific approaches (like economy & management, law, public administration, etc.) please have a look at the other available libguides on the library website.
For teachers: if you are looking for online access to a specific book, please let me know, than I can check the available options.