FDA warning letter (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "FDA warning letter" in English language version.

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fda.gov (Global: 447^th place; English: 338^th place)

"About Warning and Close-Out Letters (see Warning Letter Close-Out Letter Program (applies to letters issued on or after Sept. 1, 2009)". US Food and Drug Administration. 20 March 2024. Retrieved 10 May 2025.^{[dead link]}
"FDA, FTC Issue Joint Warning Letter to Web Site Offering Fraudulent H1N1 Flu Supplements". FDA.gov. 19 October 2009. Archived from the original on 18 February 2017.
"About Warning and Close-Out Letters (see Drug Marketing and Advertising Warning Letters (and Untitled Letters to Pharmaceutical Companies)". US Food and Drug Administration. 20 March 2024. Retrieved 10 May 2025.^{[dead link]}

web.archive.org (Global: 1^st place; English: 1^st place)

FDA: Regulatory Procedures Manual, "Exhibit 4-1 Procedures for Clearing FDA Warning Letters and Untitled Letters" Accessed 6 July 2010.
FDA: Regulatory Procedures Manual, "4-3 - Use of State Evidence for FDA Warning Letters and Untitled Letters" Accessed 6 July 2010.
FDA: Regulatory Procedures Manual, "4-1 - Warning Letters". Accessed 6 July 2010.
"FDA, FTC Issue Joint Warning Letter to Web Site Offering Fraudulent H1N1 Flu Supplements". FDA.gov. 19 October 2009. Archived from the original on 18 February 2017.
FDA: Freedom of Information Accessed 6 July 2010.