Παραπομπή σε μορφή APA (7η εκδ.)

Brown, H. S. (1954). The challenge of man's future: An inquiry concerning the condition of man during the years that lie ahead. Viking Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Brown, Harrison Scott. The Challenge of Man's Future: An Inquiry Concerning the Condition of Man During the Years That Lie Ahead. New York: Viking Press, 1954.

Παραπομπή σε μορφή MLA (9th εκδ.)

Brown, Harrison Scott. The Challenge of Man's Future: An Inquiry Concerning the Condition of Man During the Years That Lie Ahead. Viking Press, 1954.