1. Azizo, A. S. B.
,
Mohamed, F. B.
,
Siang, C. V.
, &
Isham, M. I. M.
(2020). Virtual Reality 360 UTM Campus tour with voice commands. In 6th International Conference on Interactive Digital Media (ICIDM). https://doi.org/10.1109/ICIDM51048.2020.9339665
2. Broomfield, B.
(2022). Alexa, show me TripAdvisor's voice-activated marketing strategy. https://www.clickz.com/alexa-show-me-tripadvisors-voice-activated-marketing-strategy/267210/
3. In-room voice-based AI digital assistants transforming on-site hotel services and guests' experiences,2021
4. Duran, V.
(2021). Seven advantages of using voice technology in the hotel industry. https://insights.ehotelier.com/insights/2021/05/04/7-advantages-of-using-voice-technology-in-the-hotel-industry/
5. Escobar, M. C.
(2018). Expedia launches the first action for the Google Assistant. https://hospitalitytech.com/expedia-launches-first-action-google-assistant