एपीए उद्धरण

Ordway, R. J. (1966). Earth science. Van Nostrand Reinhold Company.

शिकागो स्टाइल उद्धरण

Ordway, Richard J. Earth Science. New Delhi: Van Nostrand Reinhold Company, 1966.

एमएलए उद्धरण

Ordway, Richard J. Earth Science. Van Nostrand Reinhold Company, 1966.