APA (7th ed.) Citation

Whitman, W. (1931). Specimen days in America. H. Milford, Oxford University Press.

Chicago Style (17th ed.) Citation

Whitman, Walt. Specimen Days in America. London: H. Milford, Oxford University Press, 1931.

MLA (9th ed.) Citation

Whitman, Walt. Specimen Days in America. H. Milford, Oxford University Press, 1931.