Não informado. (2018). Publications of the Dominion Observatory. Dominion Astronomical Observatory.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Publications of the Dominion Observatory. Ottawa: Dominion Astronomical Observatory, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Publications of the Dominion Observatory. Dominion Astronomical Observatory, 2018.
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