My understanding is that rules governing punctuation and quotation marks are partly governed by what country you're writing in. For example, in American English, we always place periods inside quotation marks. However, is this still true when the quotation marks only include one word at the end of a sentence? Is the following example correct?
It's an oil-extraction method known as "fracking."
It feels off to me but if periods must always go inside quotation marks my guess is that it's correct.