Gaya APA
Young-mi, K., Ki-pyo, S. (2020).
ENGLISH FOR PROFESSIONAL Airline Service dan Travel .
JAKARTA:
Penerbit Erlangga.
Gaya MLA
Young-mi, Kim., Ki-pyo, Son.
"ENGLISH FOR PROFESSIONAL Airline Service dan Travel".
JAKARTA:
Penerbit Erlangga,
2020.
Text.