Lee. (2021). The Future of Service Post-COVID-19 Pandemic, Volume 1 (1.). Springer Singapore.
Chicago Style aipamenaLee. The Future of Service Post-COVID-19 Pandemic, Volume 1. 1. Springer Singapore, 2021.
MLA aipamenaLee. The Future of Service Post-COVID-19 Pandemic, Volume 1. 1. Springer Singapore, 2021.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.