Gaya APA
Ngerntra, Sompong Amnuay. (2003).
Product Development for Heritage Tourism .
asia tenggara:
.
Gaya Chicago
Ngerntra, Sompong Amnuay.
Product Development for Heritage Tourism.
asia tenggara:
,
2003.
Text.
Gaya MLA
Ngerntra, Sompong Amnuay.
Product Development for Heritage Tourism.
asia tenggara:
,
2003.
Text.
Gaya Turabian
Ngerntra, Sompong Amnuay.
Product Development for Heritage Tourism.
asia tenggara:
,
2003.
Print.