Gaya APA

Ki-pyo, K, Y, &, S. (2017). English for Profesional Airline Service and Travel (Edisi 2017). Jakarta: Erlangga.

Gaya MLA

Ki-pyo, Kim, Young-mi, &, Son. "English for Profesional Airline Service and Travel". Edisi 2017 Jakarta: Erlangga, 2017. Text.