From R in Action, Third Edition by Robert Kabacoff
This article dicusses graphs and graphic using the ggplot2 package
From Graph Databases in Action by Dave Bechberger and Josh Perryman
In this article, we’ll review what makes a problem a good graph use case. We’ll start by examining a few general categories of problems and discussing why they might make for good graph use case. Finally, we’ll analyze a general framework that we can use to help us decide if our problem is a good graph use case.