References
Angel, E. (2000). Interactive computer graphics : A top-down approach with opengl. Boston, MA: Addison Wesley Longman.
Angel, E. (2001a). Batch-file computer graphics : A bottom-up approach with quicktime. Boston, MA: Wesley Addison Longman.
Angel, E. (2001b). Test second book by angel. Boston, MA: Wesley Addison Longman.