1. Weaver. Spaces of containment and revenue capture: “Super-sized” cruise ships as mobile tourism enclaves. Tourism Geographies, 7(2), 165–184. https://doi.org/10.1080/14616680500072398 (2005).
2. D. C. Augustinus and S. Suksian. Customer Perception of New Normal Hygiene Standard Implementation in Café. Conference Series, 3(2), 107–120. https://doi.org/10.34306/conferenceseries.v3i2.582 (2021).
3. D. M., Lemy, F. Teguh, and A. Pramezwary. Tourism Development in Indonesia. 11, 91–108. https://doi.org/10.1108/S2042-144320190000011009 (2019)
4. F. Fusté-Forné, and N. Michael, Limited tourism: travel bubbles for a sustainable future. Journal of Sustainable Tourism, 0(0), 1–18. https://doi.org/10.1080/09669582.2021.1954654 (2021)
5. G.D. Sharma, A. Thomas, and J. Paul. Reviving tourism industry post-COVID-19: A resilience-based framework. Tourism Management Perspectives, 37, 100786. https://doi.org/10.1016/J.TMP.2020.100786 (2021)
6. H. Zhang, H. Song, L. Wen and C. Liu. Forecasting tourism recovery amid COVID-19. Annals of Tourism Research, 87, 103149. https://doi.org/10.1016/j.annals.2021.103149 (2021)
7. Penerbangan. DENGAN TRAVEL BUBBLE, INDUSTRI PENERBANGAN DAN PARIWISATA TERBANTU. Retrieved November 12, 2021, from Info Penerbangan website: https://www.infopenerbangan.com/dengan-travel-bubble-industri-penerbangan-dan-pariwisata-terbantu/ (2020)
8. Iskandar. Apa Itu Aplikasi eHAC, Fungsi Beserta Manfaatnya? - Tekno Liputan6.com. Liputan 6. Retrieved from https://www.liputan6.com/tekno/read/4645663/apa-itu-aplikasi-ehac-fungsi-beserta-manfaatnya (2021)
9. J. F. Curran, BASE - Bubble architecture space environments. Collection of Technical Papers - Space 2006 Conference, 2(September), 1417–1438. https://doi.org/10.2514/6.2006-7320 (2006)
10. J. G. Carrier and D.V. L. Macleod. Bursting the bubble: The socio-cultural context of ecotourism. Journal of the Royal Anthropological Institute, 11(2), 315–334. https://doi.org/10.1111/j.1467-9655.2005.00238.x (2005).
11. K. S. A. Elhalem, D.A. M. Ahmed, and A. Ebied. ARCHAEOLOGICAL REPLICA MODELS: A NEW VISITOR MANAGEMENT TECHNIQUE TO SUSTAIN THE HERITAGE SITES. International Journal of Tourism and Hospitality Management, 2(1), 21–42 (2019)
12. L. Tickle and E. von Essen. The seven sins of hunting tourism. Annals of Tourism Research, 84(June), 102996. https://doi.org/10.1016/j.annals.2020.102996 (2020)
13. M.A. Hamid, S.M. Isa,and S. Kiumarsi, Sustainable tourism practices and business performance from the tour operators’ perspectives. Anatolia, 32(1), 23–32. https://doi.org/10.1080/13032917.2020.1830135 (2021)
14. S. Zenker and F. Kock. The coronavirus pandemic – A critical discussion of a tourism research agenda. Tourism Management, 81, 104164. https://doi.org/https://doi.org/10.1016/j.tourman.2020.104164 (2020).
15. S.M. Isa, and A. H. Jaafar, Integrating Innovation and Sustainability into Tour Operator Business. International Journal of Innovation and Sustainable Development, 15(4), 458–474 (2021)
16. Y. C. Tie, M. Birks, and K. Francis. Grounded theory research: A design framework for novice researchers. SAGE Open Medicine, 7, 205031211882292. https://doi.org/10.1177/2050312118822927 (2019)
17. Y. Raharyo. Tekan Covid-19, Pemerintah Luncurkan Aplikasi PeduliLindungi. Radar Bali. Retrieved from https://radarbali.jawapos.com/ekonomi/09/09/2021/tekan-covid-19-pemerintah-luncurkan-aplikasi-pedulilindungi (2021)