Cita APA (7th ed.)

Harding, W. R. (1982). The days of Henry Thoreau: A biography ([2nd ed.].). Dover Publications.

Cita Chicago (17th ed.)

Harding, Walter Roy. The Days of Henry Thoreau: A Biography. [2nd ed.]. New York: Dover Publications, 1982.

Cita MLA (9th ed.)

Harding, Walter Roy. The Days of Henry Thoreau: A Biography. [2nd ed.]. Dover Publications, 1982.