References

Dubicka, Iwonna and O’Keeffe, Margaret. (2003). English for International Tourism. Pearson Education.

Jhon, Leo.  (1998). English for The Travel Industry. Cambride University Press.

Leo, Susanto. (2016). English for Profesional Tour Guiding Service.  Gramedia Pustaka Utama.

Mol, Hanson. (2008). English for Tourism and Hospitality. Garnet Publishing. Ltd.

Putra, Andreas Perdana. (2023). Travelindo. Indonesian On Line Travel  Service. http://www.travelindo.com/profile.php/about. Diakases Tanggal  23 Januari 2024. 

Stott, Tris and Buckingham, Angela. (2005). At Your Servise. English for The Travel and Touris Industri. Oxford University Press.

Wyatt, Rawdon. (2007). Check Your English Vocabulary for Hotels, Tourism and Catering Management. Bloomsbury Publishing Plc.

https://indonesia.embassy.gov.au/jakt/apply_info.html

https://en.wikipedia.org/wiki/Changi_Airport

https://www.halaltrip.com