American English:
* Full stop inside the speech marks: "The cat sat on the mat."
* Question mark or exclamation mark inside the speech marks: "Did you see that?" "Wow, that's amazing!"
* Comma outside the speech marks: "Hello," she said.
British English:
* Full stop outside the speech marks: "The cat sat on the mat".
* Question mark or exclamation mark outside the speech marks: "Did you see that"? "Wow, that's amazing"!
* Comma outside the speech marks: "Hello," she said.
Important Note: The rule for commas remains the same in both styles.
It's important to be consistent with the style you choose, whether it's American or British. If you're writing for a specific publication, they may have their own style guide to follow.