Williams, W. C. (1967). The collected later poems of William. New Directions.
Cita Chicago (17th ed.)Williams, William Carlos. The Collected Later Poems of William. New York: New Directions, 1967.
Cita MLA (9th ed.)Williams, William Carlos. The Collected Later Poems of William. New Directions, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.