एपीए उद्धरण

Clarke, A. C. (1958). Profiles of the future an enquiry into the limits of the possible. Harper.

शिकागो स्टाइल उद्धरण

Clarke, Arthur C. Profiles of the Future an Enquiry into the Limits of the Possible. New York: Harper, 1958.

एमएलए उद्धरण

Clarke, Arthur C. Profiles of the Future an Enquiry into the Limits of the Possible. Harper, 1958.