Gaya APA
Gunung Sewu Unesco Geopark. (2018).
Solo:
Gloria Graffa.
Gaya Chicago
Gunung Sewu Unesco Geopark.
1.
Solo:
Gloria Graffa,
2018.
Electronic Resource.
Gaya MLA
Gunung Sewu Unesco Geopark.
1.
Solo:
Gloria Graffa,
2018.
Electronic Resource.
Gaya Turabian
Gunung Sewu Unesco Geopark.
Solo:
Gloria Graffa,
2018.
Electronic Resource.