एपीए उद्धरण

Williams, M. (1976). Preface to Hardy. Longman.

शिकागो स्टाइल उद्धरण

Williams, Merryn. Preface to Hardy. Longman, 1976.

एमएलए उद्धरण

Williams, Merryn. Preface to Hardy. Longman, 1976.