Gaya APA
Swarbrooke, J., Horner, S.
(2001).
E-BOOK : BUSINESS TRAVEL AND TOURISM
.
Oxford:
Butterworth-Heinemann.
Gaya MLA
Swarbrooke, John., Horner, Susan.
"E-BOOK : BUSINESS TRAVEL AND TOURISM".
Oxford:
Butterworth-Heinemann,
2001.
Text.