APA (7th ed.) Citation

Thoreau, H. D. Walden, or life in the woods. Grolier.

Chicago Style (17th ed.) Citation

Thoreau, Henry David. Walden, or Life in the Woods. Grolier.

MLA (8th ed.) Citation

Thoreau, Henry David. Walden, or Life in the Woods. Grolier.

Warning: These citations may not always be 100% accurate.