Zeppelin-Staaken E-4/20 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Zeppelin-Staaken E-4/20" in English language version.

refsWebsite

Global rank English rank

low place

low place

6^th place

6^th place

low place

low place

1flightglobal.com

223^rd place

162^nd place

all-aero.com

"Zeppelin-Staaken E.4/20". all-aero. Retrieved 30 January 2017.

archive.org

Tapper, Oliver (1973). Armstrong Whitworth Aircraft since 1913. London: Putnam & Company Limited. pp. 219-235. ISBN 9780370100043.

flightglobal.com

"THE ZEPPELIN-STAAKEN ALL-METAL MONOPLANE: And a New Smaller Edition". Flight: 185–186. 17 March 1921. Retrieved 30 January 2017.

schule-bw.de

"Die Staaken E.4/20 - das fortschrittlichste Verkehrsflugzeug seiner Zeit". schule-bw.de (in German). Retrieved 30 January 2017.