This guide covers what the book is, who it is for, its pros and cons, and how to use the PDF version effectively for your engineering studies. If you are an Electrical or Electronic Engineering student in an Italian university (or studying abroad with an Italian curriculum), you have almost certainly encountered the name Renzo Perfetti . His textbook, Circuiti Elettrici , is considered the "bible" of circuit theory for many courses, particularly at La Sapienza, Politecnico di Milano, and other major Italian institutions.