Gaya APA

ASTM, . (1997). ASTM D 1985-91 Standard practice for preparing concrete blocks for testing sealants, for joints and cracks . : ASTM.

Gaya MLA

ASTM, . "ASTM D 1985-91 Standard practice for preparing concrete blocks for testing sealants, for joints and cracks". : ASTM, 1997. Diorama.