Gaya APA
Natalia, Ellen. (2016).
Hotelier : Be A Hotelier In Your Life (Cet.Pertama).
Surabaya:
IBMT.
Gaya Chicago
Natalia, Ellen.
Hotelier : Be A Hotelier In Your Life.
Cet.Pertama
Surabaya:
IBMT,
2016.
Text.
Gaya MLA
Natalia, Ellen.
Hotelier : Be A Hotelier In Your Life.
Cet.Pertama
Surabaya:
IBMT,
2016.
Text.
Gaya Turabian
Natalia, Ellen.
Hotelier : Be A Hotelier In Your Life.
Cet.Pertama
Surabaya:
IBMT,
2016.
Print.