There may be places in your manuscript where you quote from a previously published work. If you’re quoting a substantial portion of the original material, you need to obtain permission from the copyright holder (and you may have to pay a fee). Otherwise, you could end up scrambling for a replacement quote—or worse, be forced to do a rewrite—if the copyright holder turns down your request.
What requires permission to reprint?
Not absolutely everything you quote requires permission, only the substantial quotations. What constitutes “substantial”? If it... keep reading