APA (7th ed.) Citation

Gassmann, O., Böhm, J., & Palmié, M. (2019). Smart cities: Introducing digital innovation to cities. Emerald.

Chicago Style (17th ed.) Citation

Gassmann, Oliver, Jonas Böhm, and Maximilian Palmié. Smart Cities: Introducing Digital Innovation to Cities. Howard House: Emerald, 2019.

MLA (8th ed.) Citation

Gassmann, Oliver, et al. Smart Cities: Introducing Digital Innovation to Cities. Emerald, 2019.