Gaya APA

ASTM, . (1997). ASTM C 938 - 80 Standard practice for proportioning grout mixture for preplaced aggregate concrete . : ASTM.

Gaya MLA

ASTM, . "ASTM C 938 - 80 Standard practice for proportioning grout mixture for preplaced aggregate concrete". : ASTM, 1997. Diorama.