Gaya APA

ASTM, . (1997). ASTM C 1137 - 90 Standard test method for degradation of fine aggregate due to attrition . : ASTM.

Gaya MLA

ASTM, . "ASTM C 1137 - 90 Standard test method for degradation of fine aggregate due to attrition". : ASTM, 1997. Diorama.