Gaya APA
bull,adrian. (1991).
The Economics Of Travel And Tourism/bull,adrian .
Australia:
Longman Cheshire.
Gaya Chicago
bull,adrian.
The Economics Of Travel And Tourism/bull,adrian.
Australia:
Longman Cheshire,
1991.
Text.
Gaya MLA
bull,adrian.
The Economics Of Travel And Tourism/bull,adrian.
Australia:
Longman Cheshire,
1991.
Text.
Gaya Turabian
bull,adrian.
The Economics Of Travel And Tourism/bull,adrian.
Australia:
Longman Cheshire,
1991.
Print.