Siegel, E., Garlick, M. A., Lomberg, J., & Lidwell, W. (2025). The grand cosmic story: An illustrated timeline 13.8 billion years and beyond (First National Geographic edition.). National Geographic Partners.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSiegel, Ethan, Mark A. Garlick, Jon Lomberg, और William Lidwell. The Grand Cosmic Story: An Illustrated Timeline 13.8 Billion Years and Beyond. First National Geographic edition. Washington, D.C.: National Geographic Partners, 2025.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSiegel, Ethan, et al. The Grand Cosmic Story: An Illustrated Timeline 13.8 Billion Years and Beyond. First National Geographic edition. National Geographic Partners, 2025.
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