एपीए उद्धरण

National Geographic Society (U.S.). Cartographic Division., Shupe, J. F., Ritter, L. R., Wahll, A. J., Pratt, R. E., & Tirion, W. (1995). The heavens ; Star birth in the Orion Nebula. Washington, D.C.: The Society.

शिकागो स्टाइल उद्धरण

National Geographic Society (U.S.). Cartographic Division., John F. Shupe, Lisa R. Ritter, Andrew J. Wahll, Robert E. Pratt, और Wil Tirion. The Heavens ; Star Birth in the Orion Nebula. Washington, D.C.: The Society, 1995.

एमएलए उद्धरण

National Geographic Society (U.S.). Cartographic Division., et al. The Heavens ; Star Birth in the Orion Nebula. Washington, D.C.: The Society, 1995.

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