Smith, R. (2019). The world beneath: The life and times of unknown sea creatures and coral reefs. Apollo Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSmith, Richard. The World Beneath: The Life and Times of Unknown Sea Creatures and Coral Reefs. [New York]: Apollo Publishers, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSmith, Richard. The World Beneath: The Life and Times of Unknown Sea Creatures and Coral Reefs. Apollo Publishers, 2019.
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