1. Agoda: Agoda enhances traveler experience with new capabilities and offering for B2B2C partners (2019).
https://ir.bookingholdings.com/node/24631/pdf
. Accessed 15 Nov 2019
2. AirBnB: AirBnB news (2019).
https://news.airbnb.com/about-us/
. Accessed 15 Nov 2019
3. Alexa report: The top ranked sites in Travel category (2019).
https://www.alexa.com/topsites/category/Top/Recreation/Travel
. Accessed 15 Nov 2019
4. Booking Holdings: About Booking Holdings (2019).
https://www.bookingholdings.com/about/
. Accessed 15 Nov 2019
5. Booking.com: About Booking.com (2019).
https://www.booking.com/
. Accessed 15 Nov 2019