Boeing AH-64 Apache (Estonian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Boeing AH-64 Apache" in Estonian language version.

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Global rank Estonian rank

1,038^th place

1,728^th place

1^st place

7,014^th place

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4,662^nd place

8,330^th place

2,662^nd place

8,999^th place

airforce-technology.com (Global: 4,662^nd place; Estonian: 8,330^th place)

Verdict Media (17. aprill 2020). "US Army takes delivery of 500th Boeing AH-64E Apache Helicopter". www.airforce-technology.com. Originaali arhiivikoopia seisuga 18. aprill 2020. Vaadatud 18. aprill 2020.

"Modernizing the Army's Rotary-Wing Aviation Fleet" (PDF). Congressional Research Service. 1. november 2007.

"United States Department of Defense Fiscal Year 2012 Budget Request" (PDF). Office of the Under Secretary of Defense (Comptroller). Veebruar 2011.
"United States Department Of Defense Fiscal Year 2015 Budget Request Program Acquisition Cost By Weapon System" (PDF). Office of the Under Secretary of Defense (Comptroller)/ Chief Financial Officer. Märts 2014. Lk 18.

Verdict Media (17. aprill 2020). "US Army takes delivery of 500th Boeing AH-64E Apache Helicopter". www.airforce-technology.com. Originaali arhiivikoopia seisuga 18. aprill 2020. Vaadatud 18. aprill 2020.
Haynes, Mary L. and Cheryl Morai Young, ed. "Department of the Army Historical Summary, FY 1987, Chapter 5: Modernizing and Equipping the Army". Center of Military History, United States Army, 1995.