एपीए उद्धरण

Harper, M. (1971). None can guess. Hodder and Stoughton.

शिकागो स्टाइल उद्धरण

Harper, Michael. None Can Guess. London: Hodder and Stoughton, 1971.

एमएलए उद्धरण

Harper, Michael. None Can Guess. Hodder and Stoughton, 1971.