Punctuation two styles differ mainly in the way in which they handle quotation marks, particularly in conjunction with other punctuation marks. In British English, punctuation such as periods and commas are placed outside the closing quotation mark; in American English, however, punctuation is placed inside the closing quotation mark. This rule varies for other punctuation marks; for example, American English follows the British English rule when it comes to semicolons, colons, question marks, and exclamation points. Other languages of Europe use much the same punctuation as English. The similarity is so strong that the few variations may confuse a native English
The Chicago Manual of Style an interposed comma. If the author's name is used in the text, only the date of publication need be cited parenthetically (with or without the page number). In-text citations are usually placed just inside a mark of punctuation. An exception to this rule is for block quotations, where the citation is placed outside the punctuation. The full citation for the source is then included in a references section at the end of the material. As publication dates are prominent in this style, the reference entry places the publication date "following" the author(s) name. Using notes and bibliography style, the sourced