Gaya APA

ASTM, . (1997). ASTM D 2168 - 90 (reapproved 1996) ; ASTM D 2168 - 02a Standard test methods for calibration of laboratory mechanical rammer soil compactors . : ASTM.

Gaya MLA

ASTM, . "ASTM D 2168 - 90 (reapproved 1996) ; ASTM D 2168 - 02a Standard test methods for calibration of laboratory mechanical rammer soil compactors". : ASTM, 1997. Diorama.