Quotations of Poetry: Never quote more than one or two lines of a copyrighted poem without securing written permission from the copyright owner. Always give proper credit. In quoting poetry from a secondary source (book, magazine, or anthology), secure permission from the copyright owner of the poem.
Note: This rule also applies to hymns and music texts, unless the hymnal (or the specific hymn used) is in public domain. Always write to the owner of the copyright (if one is listed with the hymn) to secure permission to use all or part of a hymn. The title of a song or hymn may be used without permission. Also ask permission if you want to put new words to a familiar tune, arrange someone else’s music for a special application, or anything that casts their work into a new product.