Gaya APA
Putlack. (2020).
English for professional hotel staff .
Jakarta:
Erlangga.
Gaya Chicago
Putlack.
English for professional hotel staff.
Jakarta:
Erlangga,
2020.
Text.
Gaya MLA
Putlack.
English for professional hotel staff.
Jakarta:
Erlangga,
2020.
Text.
Gaya Turabian
Putlack.
English for professional hotel staff.
Jakarta:
Erlangga,
2020.
Print.