Cita APA (7th ed.)

(1942). I believe: The personal philosophies of twenty-three eminent men and women of our time. Allen & Unwin.

Cita Chicago (17th ed.)

I Believe: The Personal Philosophies of Twenty-three Eminent Men and Women of Our Time. London: Allen & Unwin, 1942.

Cita MLA (8th ed.)

I Believe: The Personal Philosophies of Twenty-three Eminent Men and Women of Our Time. Allen & Unwin, 1942.