Gaya APA
JOHANNSEN, A.
(1938).
A DESCRIPTIVE PETROGRAPHY OF THE IGNEOUS ROCKS
(
1938)
.
America:
UNIVERSTY OF CHICAGO.
Gaya MLA
JOHANNSEN, ALBERT..
"A DESCRIPTIVE PETROGRAPHY OF THE IGNEOUS ROCKS".
1938
America:
UNIVERSTY OF CHICAGO,
1938.
Text.