Gaya APA
Swarbrooke, J., Horner, S.
(2001).
Business Travel and Tourism
(
1)
.
Oxford:
Butterworth-Heinemann.
Gaya MLA
Swarbrooke, John., Horner, Susan.
"Business Travel and Tourism".
1
Oxford:
Butterworth-Heinemann,
2001.
eBook.