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In a professional email the document title (and perhaps the date when it was shared) is a sufficient reference. I am assuming that the document was either shared by email, or given in a meeting, a...
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#4: Attribution notice removed
Source: https://writers.stackexchange.com/a/44112 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#3: Attribution notice added
Source: https://writers.stackexchange.com/a/44112 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
In a professional email the document title (and perhaps the date when it was shared) is a sufficient reference. I am assuming that the document was either shared by email, or given in a meeting, and that it is obvious that you are privy to this information. > As stated in [DOCUMENT TITLE], sent on [DATE], "importantstuff"" or > Quoting from [DOCUMENT TITLE], page [XX], "importantstuff". For clarity, I am referring to [DOCUMENT TITLE], sent on [DATE] [BY EMAIL/AT MEETING/ARRIVED BY POST]. If the creator of the document is essential, i.e. you HAVE to name someone, then you can add: > At present I cannot provide/I do not possess further details on the author of [DOCUMENT NAME]. Further information will be emailed as it becomes available.