Gaya APA
ASTM, . (1997).
ASTM D 4637 - 96 ; ASTM D 4637 - 04 Standard specification for EPDM sheet used in single - ply roof membrane .
:
ASTM.
Gaya MLA
ASTM, .
"ASTM D 4637 - 96 ; ASTM D 4637 - 04 Standard specification for EPDM sheet used in single - ply roof membrane".
:
ASTM,
1997.
Diorama.