He also spent some terms at University of Fribourg (Switzerland) and across 2003-2004, he has been visiting professor at École Normale Supérieure in Paris.

Caldarelli is the author of Scale-free networks a textbook for graduate students published by Oxford University Press.

[11] He also edited with World Scientific Press and Alessandro Vespignani another book Large Scale Structure and Dynamics of Complex Networks[12] on the activity of COSIN project.

In 2012, he published together with the colleague and journalist Michele Catanzaro the book Networks: A Very Short Introduction by Oxford University Press.

[14] In 2018 he edited together with Stefano Battiston and Antonios Garas the book Multiplex and Multilevel Networks again by Oxford University Press.