Italics do not include punctuation marks (end marks or parentheses, for instance) next to the words being italicized unless those punctuation marks are meant to be considered as part of what is being italicized: "Have you read Stephen King's Pet Semetary ? (The question mark is not italicize here.) Also, do not italicize the apostrophe-s which creates the possessive of a title: "What is the Courant 's position on this issue?" You'll have to watch your word-processor on this, as most word-processors will try to italicize the entire word that you double-click on.
Style guides like those published by the Modern Language Association (MLA) and the American Psychological Association (APA) are great sources to turn to when you need to know how to punctuate something properly for a paper. But if you’re not writing an academic paper or your writing includes topics that aren’t typically found in professional publications, they won’t provide you with the answers you need. For those issues, you have to rely on your own judgment in applying the rules because an official standard hasn’t been set.