Earle, S. A., & Phelan, G. (2020). Extreme ocean: Amazing animals, high-tech gear, record-breaking depths, and much more! National Geographic.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEarle, Sylvia A., और Glen Phelan. Extreme Ocean: Amazing Animals, High-tech Gear, Record-breaking Depths, and Much More! Washington, DC: National Geographic, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रEarle, Sylvia A., और Glen Phelan. Extreme Ocean: Amazing Animals, High-tech Gear, Record-breaking Depths, and Much More! National Geographic, 2020.
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