Gaya APA
Wibowo, L, R. (2002).
Strategic Planning for Sustainable Ecotourism Product Development. ( Thesis 2002 ) .
Belanda:
Unv. Netherlands.
Gaya MLA
Wibowo, Lukas, Rumboko.
"Strategic Planning for Sustainable Ecotourism Product Development. ( Thesis 2002 )".
Belanda:
Unv. Netherlands,
2002.
Text.