APA Style
International, A. (1981).
1981 Annual book of ASTM Standars : Steel-Bars, Forgings, Bearing, Chain, Springs Part 5 .
Philadelphia:
ASTM International.
MLA Style
International, ASTM.
"1981 Annual book of ASTM Standars : Steel-Bars, Forgings, Bearing, Chain, Springs Part 5".
Philadelphia:
ASTM International,
1981.
Direktori, annual, yearbook.