Gaya APA
Dhadar, J, R., Budijarto, . (1971).
Final Report On Gravity Survey In Lagan Area-Djambi And Indragiri Hilir Area-Riau Eastern Part Sumatera Indonesia .
Bandung:
Ministry Of Mines.
Gaya MLA
Dhadar, J., Rainir., Budijarto, .
"Final Report On Gravity Survey In Lagan Area-Djambi And Indragiri Hilir Area-Riau Eastern Part Sumatera Indonesia".
Bandung:
Ministry Of Mines,
1971.
Geofisika.