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.