PostGIS in Action, 3rd edition is available direct from Manning and includes e-Book of 2nd edition. The 3rd edition covers the PostGIS 3, 3.1 and highlights of upcoming 3.2 as well as PostgreSQL 12 and 13.
Complement your PostGIS adventure with our network routing book pgRouting: A practical Guide. Covers prepping data for routing, drive time analysis, vehicle route planning, general trip routing, and building a routing web app using pgRouting, PostGIS, PostgreSQL, and Leaflet.js working together. Get the E-Book From LocatePress and hard-copy from Amazon.
Explore in more detail the DBMS that make PostGIS and pgRouting so powerful with our latest book PostgreSQL: Up and Running 3rd Edition covers PostgreSQL 9.4-10 hard-copy and Kindle from Amazon and EBook from O'Reilly.
pgRouting: A Practical Guide is available in Hardcopy from Hardcopy from Amazon. E-Book or Bulk discounts on Hard-copy from Locate Press.