Answer by
Ana (28)
Yes! Actually, this rule works for all punctuation, not just periods -- commas, exclamation or question marks, any phrase-ending punctuation you encounter. Include in quotes any punctuation that accompanies the quoted material, like dashes or ellipses...
Some examples:
John wanted the "soup du jour."
"I don't understand," she exclaimed, "who's invited?"
Kitty yelled, "Hello!"
"Et tu, Brute?" (Shakespeare).