Gaya APA
Hall, S., Blappert, T. (2010).
First Class Service: English for the Tourism and Hospitality Industry 2 (Edisi Pertama).
Singapore:
Cengage Learning.
Gaya MLA
Hall, Stephen., Blappert, Troy.
"First Class Service: English for the Tourism and Hospitality Industry 2".
Edisi Pertama
Singapore:
Cengage Learning,
2010.
BUKU.