Hiller XH-44 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Hiller XH-44" in English language version.

refsWebsite

Global rank English rank

2books.google.com

3^rd place

3^rd place

1aviation-history.com

low place

low place

1eastbaytimes.com

5,979^th place

3,198^th place

1web.archive.org

1^st place

1^st place

low place

low place

aviation-history.com

"Hiller XH-44 Hiller Copter". www.aviation-history.com. Retrieved 2020-06-28.

books.google.com

McGowen, Stanley S. (2005). Helicopters: An Illustrated History of Their Impact. ABC-CLIO. ISBN 978-1-85109-468-4.
Skaarup, Harold A. (2003-04-07). Maryland, Virginia, and Washington D.C. Warbird Survivors 2003: A Handbook on Where to Find Them. iUniverse. ISBN 978-1-4620-4749-9.

eastbaytimes.com

"Berkeley, a Look Back: Hiller flies helicopter prototype in S.F." East Bay Times. 2019-08-29. Retrieved 2020-08-23.

hiller.org

"Hiller XH-44". Hiller Aviation Museum. Archived from the original on 2022-11-26. Retrieved 2020-06-28.

web.archive.org

"Hiller XH-44". Hiller Aviation Museum. Archived from the original on 2022-11-26. Retrieved 2020-06-28.