If you are interested in learning more about project management, here are some additional resources that you may find useful:
Search for of project management textbooks on AbeBooks or BetterWorldBooks . These cost 70% less than US editions and are legal. You won't get "S. Choudhary" specifically, but you will get Kotler, Larson, or Gray—which are superior.
The is a digital library. While they respect copyright, they host millions of out-of-print academic texts. Search for "Project Management" and filter by "Lending Library." You can "borrow" a digital copy for 1 hour or 14 days legally.