APA (7th ed.) Citation

Whitman, W., Allen, G. W., & Davis, C. T. (1955). Poems: Selections with critical aids. New York University Press.

Chicago Style (17th ed.) Citation

Whitman, Walt, Gay Wilson Allen, and Charles T. Davis. Poems: Selections with Critical Aids. New York: New York University Press, 1955.

MLA (9th ed.) Citation

Whitman, Walt, et al. Poems: Selections with Critical Aids. New York University Press, 1955.