Munch, P. A. (1964). Gray Patch seen on the island of Tristan da Cunha from offshore.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMunch, Peter Andreas. Gray Patch Seen on the Island of Tristan Da Cunha from Offshore. 1964.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMunch, Peter Andreas. Gray Patch Seen on the Island of Tristan Da Cunha from Offshore. 1964.
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