Bradley, S., & Stevenson, J. A. (1947). Walt Whitman's Backward Glances: "A Backward Glance o'er Travel'd Roads," and Two Contributory Essays Hitherto Uncollected. University of Pennsylvania Press.

Bradley, Sculley, and John A. Stevenson. Walt Whitman's Backward Glances: "A Backward Glance O'er Travel'd Roads," and Two Contributory Essays Hitherto Uncollected. Philadelphia: University of Pennsylvania Press, 1947.

Bradley, Sculley, and John A. Stevenson. Walt Whitman's Backward Glances: "A Backward Glance O'er Travel'd Roads," and Two Contributory Essays Hitherto Uncollected. University of Pennsylvania Press, 1947.