Gaya APA

ASTM, . (1969). 1969 Book of ASTM standard : with related material. Part 27 Plastics general methods of testing nomenclature (1969). : Philadelphia : ASTM,.

Gaya MLA

ASTM, . "1969 Book of ASTM standard : with related material. Part 27 Plastics general methods of testing nomenclature". 1969 : Philadelphia : ASTM,, 1969. Text.