MARC (Library of Congress): http://www.loc.gov/marc/
Massachusetts Institute of Technology (MIT): http://www.mit.edu/
Media Lab du MIT: http://www.media.mit.edu/
Merriam-Webster OnLine: http://www.m-w.com/
Michigan Electronic Library - News, Media & Periodicals: http://mel.lib.mi.us/news/news-index.html
Microsoft: http://www.microsoft.com/
Microsoft France: http://www.microsoft.com/france/
Microsoft Reader: http://www.microsoft.com/reader/
Ministère de la Culture (France) - Guide de l’internet culturel: http://www.portail.culture.fr/sdx/pic/culture/int/index.htm
Miscellanées: http://www.miscellanees.com/