Gaya APA

ASTM, . (1997). ASTM D 2626 - 97 ; ASTM D 2626 - 04 Standard specification for asphalt saturated and coated organic felt base sheet used in roofing . : ASTM.

Gaya MLA

ASTM, . "ASTM D 2626 - 97 ; ASTM D 2626 - 04 Standard specification for asphalt saturated and coated organic felt base sheet used in roofing". : ASTM, 1997. Diorama.