It Doesn't Always Have to Rhyme by Eve Merriam.

Eve Merriam wrote both fiction and nonfiction for young people over a thirty-year period, from 1962 to 1992. Merriam, who was wordstruck and versatile, created poems that are not only lyrical but rich in other ways as well, including wordplay and humor. It Doesn’t “Always” Have to Rhyme is representative of Merriam’s body of poetry for young people. Indeed, the only way in which this volume is not characteristic of Merriam’s body of work is that no political satire or social concerns are explicitly treated.