Gaya APA
Balkema, A.
(1985).
The Depelovingn Science and Art of MInerals Surveying
.
Rotterdam:
Balkemna Publishers.
Gaya MLA
Balkema, A.A..
"The Depelovingn Science and Art of MInerals Surveying".
Rotterdam:
Balkemna Publishers,
1985.
Text.