Παραπομπή APA

Clarke, A. C. (1960). Profiles of the future: An inquiry into limits of the possible. New York: Harper & Row.

Παραπομπή Chicago Style

Clarke, Arthur C. Profiles of the Future: An Inquiry Into Limits of the Possible. New York: Harper & Row, 1960.

Παραπομπή MLA

Clarke, Arthur C. Profiles of the Future: An Inquiry Into Limits of the Possible. New York: Harper & Row, 1960.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.