Wikipedia article about the poetic device and musical term called refrain. It mentions a number of forms that use refrain as well as giving some examples from poems and songs.

Several examples of predictable books are listed and organized according to type. In addition to providing titles of children's books, this resource lists related titles for young adult readers. The bibliography includes several...

Calling itself "unique," Bob's is easy to use, with cross-links throughout, phonetic pronunciation guides when necessary, and many examples and quotations. Click on the letter and scroll for the word.