Citazione Stile APA (7a Edizione)

Barth, K. (1941). This Christian cause: (A letter to Great Britain from Switzerland). Macmillan Co.

Citazione stile Chigago Style (17a edizione)

Barth, Karl. This Christian Cause: (A Letter to Great Britain from Switzerland). New York: Macmillan Co, 1941.

Citatione MLA (9a ed.)

Barth, Karl. This Christian Cause: (A Letter to Great Britain from Switzerland). Macmillan Co, 1941.