एपीए उद्धरण

Williams,martin, chappell,john, deckker,patrick de, dunkerley,david, & kershaw,peter. (1993). Quaternary environments. Hodder headline group.

शिकागो स्टाइल उद्धरण

Williams,martin, chappell,john, deckker,patrick de, dunkerley,david, और kershaw,peter. Quaternary Environments. London: Hodder headline group, 1993.

एमएलए उद्धरण

Williams,martin, et al. Quaternary Environments. Hodder headline group, 1993.