The Norton anthology of poetry.

MLA

Ferguson, Margaret W., Mary Jo Salter, and Jon Stallworthy. The Norton Anthology of Poetry. 5th ed. New York: Norton, 2005.

APA

Ferguson, M. W., Salter, M. Jo, & Stallworthy, J. (2005). The Norton anthology of poetry. 5th ed. New York: Norton.

Chicago

Ferguson, Margaret W., Mary Jo Salter, and Jon Stallworthy. The Norton Anthology of Poetry. 5th ed. New York: Norton, 2005.