Gaya APA
Diarta, I, K, S., Mertayasa, I, G, A.
(2010).
INTRODUCTION TO TOURISM SCIENCE
.
yogyakarta:
Andi.
Gaya MLA
Diarta, I, Ketut, Surya., Mertayasa, I, Gde, Agus.
"INTRODUCTION TO TOURISM SCIENCE".
yogyakarta:
Andi,
2010.
Text.