APA (7th ed.) Citation

Thoreau, H. D., & Cramer, J. S. (2012). The portable Thoreau (Updated ed.). Penguin Books.

Chicago Style (17th ed.) Citation

Thoreau, Henry David, and Jeffrey S. Cramer. The Portable Thoreau. Updated ed. New York: Penguin Books, 2012.

MLA (8th ed.) Citation

Thoreau, Henry David, and Jeffrey S. Cramer. The Portable Thoreau. Updated ed. Penguin Books, 2012.