Gaya APA

ASTM, . (1977). 1997 Annual Book of ASTM Standards. Section 4 Construction. Volume 04.09. Soil and Rock (II): D 4943 - latest; Geosynthetics . : ASTM.

Gaya MLA

ASTM, . "1997 Annual Book of ASTM Standards. Section 4 Construction. Volume 04.09. Soil and Rock (II): D 4943 - latest; Geosynthetics". : ASTM, 1977. Diorama.