Gaya APA
"mengenal ilmu
Gunung Merapi". (london,2001).
london:
Watts Books.
Gaya Chicago
"mengenal ilmu
Gunung Merapi".
.
london:
Watts Books,
london,2001.
Text.
Gaya MLA
"mengenal ilmu
Gunung Merapi".
.
london:
Watts Books,
london,2001.
Text.
Gaya Turabian
"mengenal ilmu
Gunung Merapi".
london:
Watts Books,
london,2001.
Print.