1. Inside a sentence:
* No capital letter: If the quotation is part of a larger sentence, the full stop goes inside the closing quotation mark, and the next word starts with a lowercase letter.
Example: She said, "I'm going to the store."
2. Independent sentence:
* Capital letter: If the quotation is a complete sentence on its own, the full stop goes outside the closing quotation mark, and the next sentence starts with a capital letter.
Example: "I'm going to the store." She left without a word.
3. Question marks and exclamation points:
* These punctuation marks follow the same rule as the full stop: inside for part of a sentence, outside for a complete sentence.
Example: He asked, "Are you going?"
Example: "Stop that!" she shouted.
Important note: Different style guides might have slightly different rules. Always check the specific style guide you're following if you're unsure.