Is it correct to use the preposition to in "in accordance to the rules" or does it have to be with as in "in accordance with the rule"? I have found usage of with to be more frequent but have seen a few instances of to being used. Also, here on http://grammarist.com/usage/accord-accordance/ it says either to or with can be used.
Learn English – “In accordance to the rule” and “in accordance with the rule”
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Related Solutions
I think it would mark you as a foreigner, though it would be understood.
I would say source of knowledge. I might also say source for knowledge, with a hardly different meaning
One way to get an idea of how often these two are used is Ngram
This suggests that "by" is more common, but "with" is often used as well.
To do more investigation, go to that Ngram page, click on some links at the bottom and read how they were used in actual texts.
Best Answer
"In accordance with" is by far the most used.
"In accordance to" is less popular, by a factor of hundreds
https://books.google.com/ngrams/graph?content=in+accordance+with%2Cin+accordance+to&case_insensitive=on&year_start=1800&year_end=2000&corpus=15&smoothing=3&share=&direct_url=t4%3B%2Cin%20accordance%20with%3B%2Cc0%3B%2Cs0%3B%3Bin%20accordance%20with%3B%2Cc0%3B%3BIn%20accordance%20with%3B%2Cc0%3B.t4%3B%2Cin%20accordance%20to%3B%2Cc0%3B%2Cs0%3B%3Bin%20accordance%20to%3B%2Cc0%3B%3BIn%20accordance%20to%3B%2Cc0