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Seaworld Parks and Entertainment. 2017. Reproduction. 1 hlm .https://seaworld.org/animals/all-about/beluga-whales/reproduction/, diakses pada 13 November 2020 pukul 12.40 WIB.
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World Wildlife Fund. 2017. Beluga. 1 hlm. https://arcticwwf.org/species/beluga/, diakses pada 13 November 2020 pukul 12.35 WIB.
