Some items are only available on campus or will require authentication via EUID and Password at the point of use.
Google scholar may contain articles that are not peer-reviewed and may also contain predatory journals. You will need to review the article to determine if it is scholarly.
Web of Science has a wonderful feature called impact factor: Journal Citation Reports which is at the bottom of the journal information.
[SeattleULibrary]. (2017, June 30). Citation Chaining with Google Scholar [Video File]. Retrieved from https://youtu.be/idGkqIj1Emg
[HeatherChambers]. (2015, April 24). Web of Science - Citation Chaining [Video File]. Retrieved from https://youtu.be/0As3nxO77K4