Thank you for the opportunity to help you with your question!
I recommend you to study :
CourseSmart E-Book for Economics: A PDF-style E-Book
By Paul Krugman, Robin WellsThis book it very helpful and will discuss in details about measuring producers surplus uisng graphsPlease let me know if you need any clarification. I'm always happy to answer your questions.
Jul 21st, 2015
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