http://www.namahn.com/resources/documents/note-e-learning.pdf
http://iit.bloomu.edu/Spring2006_eBook_files/
http://www.adlnet.org/
http://elearninfo247.com/2010/12/27/2010-lms-products-of-the-year/
http://elearninfo247.com/
http://elearninfo247.com/comparison-tools-templates/lms-comparison-tool/
http://barrysampson.com/2009/04/open-source-lms-10-alternatives-to-moodle/