Electric bell (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Electric bell" in English language version.

refsWebsite

Global rank English rank

2books.google.com

3^rd place

3^rd place

1web.archive.org

1^st place

1^st place

1federalsignal-indust.com

low place

low place

books.google.com

Thompson, Sylvanus P. (1891). The Electromagnet and Electromagnetic Mechanism. London: E. and F. N. Spon. pp. 318–319.
Shepardson, George Defreese (1917). Telephone Apparatus: An Introduction to the Development and Theory. New York: D. Appleton and Co. pp. 315–316.

federalsignal-indust.com

"Archived copy" (PDF). Archived from the original (PDF) on 2012-03-09. Retrieved 2011-04-29.{{cite web}}: CS1 maint: archived copy as title (link) retrieved 2011 April 29 Bell manufacturer cut sheet showing 24 V AC/DC, 120/240 V AC/DC bells

web.archive.org

"Archived copy" (PDF). Archived from the original (PDF) on 2012-03-09. Retrieved 2011-04-29.{{cite web}}: CS1 maint: archived copy as title (link) retrieved 2011 April 29 Bell manufacturer cut sheet showing 24 V AC/DC, 120/240 V AC/DC bells