Gaya APA
ASTM, . (1990).
1990 Annual book of ASTM standard . Sec.5 Vol.3 Petroleum products, lubricants, and fossil fuels (1990).
:
USA : ASTM,.
Gaya MLA
ASTM, .
"1990 Annual book of ASTM standard . Sec.5 Vol.3 Petroleum products, lubricants, and fossil fuels".
1990
:
USA : ASTM,,
1990.
Text.