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শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNational Research Council (U.S.). Committee on the Preservation of Geoscience Data and Collections এবং Inc ebrary. Geoscience Data and Collections: National Resources in Peril. Washington, D.C.: National Academies Press, 2002.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিNational Research Council (U.S.). Committee on the Preservation of Geoscience Data and Collections এবং Inc ebrary. Geoscience Data and Collections: National Resources in Peril. National Academies Press, 2002.
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