APA (7th ed.) Citation

Thoreau, H. D. (1939). Walden ; or, Life in the woods. Heritage Press.

Chicago Style (17th ed.) Citation

Thoreau, Henry David. Walden ; or, Life in the Woods. New York: Heritage Press, 1939.

MLA (9th ed.) Citation

Thoreau, Henry David. Walden ; or, Life in the Woods. Heritage Press, 1939.