Gaya APA

ASTM, . (1997). ASTM D 4074 - 91 Standard test method for bitumen and aggregate content of bitumen aggregate mixtures from roofing samples . : ASTM.

Gaya MLA

ASTM, . "ASTM D 4074 - 91 Standard test method for bitumen and aggregate content of bitumen aggregate mixtures from roofing samples". : ASTM, 1997. Diorama.