Gaya APA
1997 Annual Book of ASTM standards. Section 4 construction. Volume 04.02 concrete and aggregates. (1997).
:
ASTM.
Gaya MLA
1997 Annual Book of ASTM standards. Section 4 construction. Volume 04.02 concrete and aggregates.
.
:
ASTM,
1997.
Diorama.