Cita APA (7a ed.)

Thoreau, H. D. (1955). Walden or life in the woods. The New American library.

Cita Chicago Style (17a ed.)

Thoreau, Henry David. Walden or Life in the Woods. New York: The New American library, 1955.

Cita MLA (8a ed.)

Thoreau, Henry David. Walden or Life in the Woods. The New American library, 1955.