W.W. Norton & Company
The notes for the 5th edition of Intermediate Economics are available here through the UC Berkeley School of Information. This document is part of the suggested reading for the 2013 Basic CGE Modeling course and covers both Producer Theory (Part I of the course) and Consumer Theory (Part II of the couse).
Source / Citation
Varian, Hal R. Intermediate Microeconomics. W.W. Norton & Company, 5th Edition.