With dialogue, specific punctuation is needed. Most often, commas and periods go within the quotation marks, but there are some forms of punctuation and examples that go outside of the quotation marks ...

Speech marks are sometimes known as inverted commas or quotation marks ... Each new section of dialogue is like beginning a new paragraph, so in a printed novel you will see that each new line ...

Note the order of the punctuation: Quotation mark, citation, and then period. If only part of a quote is needed, it is possible to omit information and replace it with ellipses. Ellipses (. . .) are ...

Speech marks are sometimes known as inverted commas or quotation marks ... Each new section of dialogue is like beginning a new paragraph, so in a printed novel you will see that each new line ...