Gaya APA
ASTM, . (1997).
ASTM C 115 - 96a Standard test method for fineness of portland cement by the tubdimeter .
:
ASTM.
Gaya MLA
ASTM, .
"ASTM C 115 - 96a Standard test method for fineness of portland cement by the tubdimeter".
:
ASTM,
1997.
Diorama.