University of California Television (UCTV) (January 13, 2014). The 30th Anniversary of Cheers. YouTube.com. Archived from the original on December 21, 2021. Retrieved June 9, 2020.
Mills, Kim I. "TV viewers glad Sam stayed single." The Sunday Gazette [Schenectady, NY] May 2, 1993: A3. Google News. Web. January 21, 2012 [1]. The margin of error in the survey was ±3, according to the polls. In this web source, scroll down to see its headline.
University of California Television (UCTV) (January 13, 2014). The 30th Anniversary of Cheers. YouTube.com. Archived from the original on December 21, 2021. Retrieved June 9, 2020.