APA (7th ed.) Citation

Harding, W. R. (1965). The days of Henry Thoreau (1. ed.). Knopf.

Chicago Style (17th ed.) Citation

Harding, Walter Roy. The Days of Henry Thoreau. 1. ed. New York: Knopf, 1965.

MLA (9th ed.) Citation

Harding, Walter Roy. The Days of Henry Thoreau. 1. ed. Knopf, 1965.