Sikorsky R-4 (Italian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Sikorsky R-4" in Italian language version.

refsWebsite

Global rank Italian rank

2web.archive.org

1^st place

1^st place

237^th place

863^rd place

439^th place

1,731^st place

af.mil

nationalmuseum.af.mil

Fact Sheet "Today the 'egg-beater' went into action and the damn thing acted like it had good sense." Archiviato il 3 dicembre 2013 in Internet Archive..

navy.mil

history.navy.mil

(EN) Turner II (DD-648), su history.navy.mil. URL consultato il 15 agosto 2021.

web.archive.org

(EN) Sikorsky R-4B Hoverfly, su nationalmuseum.af.mil, National Museum of the USAF. URL consultato il 9 luglio 2008 (archiviato dall'url originale il 3 dicembre 2013).
Fact Sheet "Today the 'egg-beater' went into action and the damn thing acted like it had good sense." Archiviato il 3 dicembre 2013 in Internet Archive..