Gaya APA
ASTM, . (1997).
1997 Annual Boof of ASTM Standards. Section 4 Construction. Volume 04.08. Soil and Rock (1): D 420 - D 4914 .
:
ASTM.
Gaya MLA
ASTM, .
"1997 Annual Boof of ASTM Standards. Section 4 Construction. Volume 04.08. Soil and Rock (1): D 420 - D 4914".
:
ASTM,
1997.
Diorama.