[2] Kunjaya, C. et al. (2019). Possibility of astronomical phenomena to be used to support tourism industry. J. Phys.: Conf. Ser. 1231 012025. hlm. 6.
[3] Maranda, Servio. (2016). Gerhana Matahari di Bangka Belitung, Turis Jepang Terbanyak dalam https://nasional.tempo.co/read/751499/gerhana-matahari-di-bangka-belitung-turis-jepang-terbanyak/full&view=ok. Diakses 14 September 2020 Pukul 09.30 WIB.
[4] Kunjaya, C. et al, op cit. hlm. 7.
[5] IAU. (2018). Light Pollution dalam https://www.iau.org/static/archives/images/pdf/light-pollution-brochure.pdf. Diakses 14 September 2020 Pukul 09.30 WIB. hlm.
[6] Ibid., hlm. 4
[7] Ibid, hlm. 10
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