Gaya APA

ASTM, . (1997). ASTM D 1970 - 97; ASTM D 2178 - 04 Standard specification for self-adhering polymer modified bituminous sheet materials used as steep roofing underlayment for ice dam protection . : ASTM.

Gaya MLA

ASTM, . "ASTM D 1970 - 97; ASTM D 2178 - 04 Standard specification for self-adhering polymer modified bituminous sheet materials used as steep roofing underlayment for ice dam protection". : ASTM, 1997. Diorama.