Gaya APA

ASTM, . (1997). ASTM D 3909 - 97 ; ASTM D 3909 - 97b (Reapproved 2004) Standard specification for asphalt roll roofing (glass felt) surfaced with mineral granules . : ASTM.

Gaya MLA

ASTM, . "ASTM D 3909 - 97 ; ASTM D 3909 - 97b (Reapproved 2004) Standard specification for asphalt roll roofing (glass felt) surfaced with mineral granules". : ASTM, 1997. Diorama.