Frost, R., & Faggen, R. (1998). Early poems. Penguin Books.
Chicago Style (17th ed.) CitationFrost, Robert, and Robert Faggen. Early Poems. New York [etc.]: Penguin Books, 1998.
MLA (9th ed.) CitationFrost, Robert, and Robert Faggen. Early Poems. Penguin Books, 1998.
Warning: These citations may not always be 100% accurate.