Gaya APA
Pringgo,, H. et al (1977).
The Kromong Carbonate Rocks and Their Relationship with the Cibulakan and Parigi Formation .
Jakarta:
.
Gaya MLA
Pringgo,, Harsono. et al.
"The Kromong Carbonate Rocks and Their Relationship with the Cibulakan and Parigi Formation".
Jakarta:
,
1977.
Text.