This is from the University of Sussex United Kingdom
Now notice something else which is very important: a quotation is set off by quotation marks and nothing else. A sentence containing a quotation is punctuated exactly like any other sentence apart from the addition of the quotation marks. You should not insert additional punctuation marks into the sentence merely to warn the reader that a quotation is coming up: that’s what the quotation marks are for.
https://www.sussex.ac.uk/informatics/punctuation/quotes/marks
How my heart sings 