Gaya APA

ASTM, . (1997). ASTM D 1865 - 89 ; ASTM D 1865 - 89 (Reapproved 2002) Standard test method for hardness of mineral aggregate used on built up roofs . : ASTM.

Gaya MLA

ASTM, . "ASTM D 1865 - 89 ; ASTM D 1865 - 89 (Reapproved 2002) Standard test method for hardness of mineral aggregate used on built up roofs". : ASTM, 1997. Diorama.