Gaya APA

ASTM, . (1997). ASTM C 1138 - 97 Standard test method for abration resistance of concrete (underwater method) . : ASTM.

Gaya MLA

ASTM, . "ASTM C 1138 - 97 Standard test method for abration resistance of concrete (underwater method)". : ASTM, 1997. Diorama.