Cita APA (7th ed.)

Thoreau, H. D. On the duty of civil disobedience. Fifield.

Cita Chicago (17th ed.)

Thoreau, Henry David. On the Duty of Civil Disobedience. London: Fifield.

Cita MLA (9th ed.)

Thoreau, Henry David. On the Duty of Civil Disobedience. Fifield.