एपीए उद्धरण

Christian, S. (1998). What makes the grand canyon grand?: The world's most awe-insping natural wonders. J. Wiley.

शिकागो स्टाइल उद्धरण

Christian, Spencer. What Makes the Grand Canyon Grand?: The World's Most Awe-insping Natural Wonders. J. Wiley, 1998.

एमएलए उद्धरण

Christian, Spencer. What Makes the Grand Canyon Grand?: The World's Most Awe-insping Natural Wonders. J. Wiley, 1998.