Allwatchers Review - Muppet Christmas Carol: Review of the plot, setting, theme, and structure of the film, and links to similar movies.
Internet Movie Database: Credits, trivia, reviews, summary, quotes, links, and other details.
The Nitpickers Site: Movie errors and trivia details as contributed by viewers.
TV Guide honors Muppet Christmas Carol: By Danny Horn. [TV Guide] MuppetCentral.com archive of an article.