Gaya APA
B.DOBRIN, M.
(1981).
INTRODUCTION TO GEOPHYSICAL PROSPECTING THIRD EDITION
.
Singapura:
Mc Graw Hill.
Gaya MLA
B.DOBRIN, MILTON.
"INTRODUCTION TO GEOPHYSICAL PROSPECTING THIRD EDITION".
Singapura:
Mc Graw Hill,
1981.
Textbook.