The Google Equation
4 (15 min + 5 min) + 2 (15 min + 5 min) =
2 hours (of wasted time)
4 Represents the number of citations needed.
2 is the additional sites you're going to need to visit because it is highly unlikey that the first 4 are adequate.
15 min and 5 min is the amount of time spent on evaluating the webpage and creating a citation.
2 hours is the total amount of time spent on just figuring out if these websites are to the caliber of a college research paper.
Using library resources negates this equation because library resources are vetted and have citation creation buttions, which give you 2 hours to think critically about how best to use these citations in your paper.