US English differs regarding punctuation, however both forms are equally valid in my opinion.

Punctuation inside or outside

On Wikipedia, place all punctuation marks inside the quotation marks if they are part of the quoted material and outside if they are not. This practice is sometimes referred to as logical quotation. It is used here because it is deemed by Wikipedia consensus to be more in keeping with the principle of minimal change. This punctuation system does not require placing final periods and commas outside the quotation marks all the time, but rather maintaining their original positions in (or absence from) the quoted material.

Correct:

Arthur said, "The situation is deplorable and unacceptable."

(The period is known to be in the source.)

Correct:

Arthur said that the situation was "deplorable".

(The period is known not to be in the source, its presence in the source is uncertain, or its coverage within the quotation is considered unnecessary.)

Correct:

Martha asked, "Are you coming?"

(The question mark belongs inside because the quoted text itself was a question.)

Correct:

Did Martha say, "Come with me"?

(The very quote is being questioned, so the question mark belongs outside; any punctuation at the end of the original quote is omitted.)

When a quoted sentence fragment ends in a period, some judgment is required: if the fragment communicates a complete sentence, the period can be placed inside. The period should be omitted if the quotation is in the middle of a sentence.

Correct:

Martha said, "Come with me", and they did.

If the sequence of juxtaposed punctuation marks seems distracting or untidy, try an acceptable alternative.

Correct:

Martha said, "Come with me" (and they did).