For scholarly or peer-reviewed articles, use these databases found on the Databases A-Z List.
To search for eBooks relating to the marketing research of colleges and college students, do an advanced search in StorySearch for "marketing research" and "college students." Be sure to narrow your search to "full-text" and "eBooks." Here are just a few titles I found - there are many more. You can also search for these books by typing in the specific title. If you are off-campus or on a mobile device, you will have to log in to read them.
College Student Retention: Formula for Student Success