Gaya APA

Lee, J., Han, S, H. (2021). The Future of Service Post-COVID-19 Pandemic, Volume 1 (1st ed. 2021). : Springer Singapore.

Gaya MLA

Lee, Jungwoo., Han, Spring, H.. "The Future of Service Post-COVID-19 Pandemic, Volume 1". 1st ed. 2021 : Springer Singapore, 2021. Electronic Resource.