Lee, J., & Han, S. H. (2021). The Future of Service Post-COVID-19 Pandemic, Volume 1: Rapid Adoption of Digital Service Technology. Springer Nature.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLee, Jungwoo, और Spring H. Han. The Future of Service Post-COVID-19 Pandemic, Volume 1: Rapid Adoption of Digital Service Technology. Springer Nature, 2021.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLee, Jungwoo, और Spring H. Han. The Future of Service Post-COVID-19 Pandemic, Volume 1: Rapid Adoption of Digital Service Technology. Springer Nature, 2021.
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