Cita APA (7th ed.)

Duffus, R. L. (1967). Tomorrow's news: A primer for prophets. Norton.

Cita Chicago (17th ed.)

Duffus, Robert Luther. Tomorrow's News: A Primer for Prophets. New York: Norton, 1967.

Cita MLA (9th ed.)

Duffus, Robert Luther. Tomorrow's News: A Primer for Prophets. Norton, 1967.