Gaya APA
Mill, Robert Christie. (1990).
Tourism the international business .
New Jersey:
Prentice Hall.
Gaya Chicago
Mill, Robert Christie.
Tourism the international business.
New Jersey:
Prentice Hall,
1990.
Text.
Gaya MLA
Mill, Robert Christie.
Tourism the international business.
New Jersey:
Prentice Hall,
1990.
Text.
Gaya Turabian
Mill, Robert Christie.
Tourism the international business.
New Jersey:
Prentice Hall,
1990.
Print.