Sikorsky S-52 (Vietnamese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Sikorsky S-52" in Vietnamese language version.

refsWebsite

Global rank Vietnamese rank

1flightglobal.com

223^rd place

378^th place

1vertical-aviation.com

low place

low place

1web.archive.org

1^st place

1^st place

flightglobal.com

“"Sikorsky S-52 Series - A Successful Little Helicopter and its Background”. Flight International: 178. ngày 7 tháng 8 năm 1953.

vertical-aviation.com

Hummingbird Helicopter Lưu trữ 2009-11-23 tại Wayback Machine. vertical-aviation.com.

web.archive.org

Hummingbird Helicopter Lưu trữ 2009-11-23 tại Wayback Machine. vertical-aviation.com.