Gaya APA
Organization, I, S. (1988).
Heat-Treatable Steels, Alloys Steels and Free-Cutting Steels-Port 9: Wrought Free-Cutting Steels .
USA:
ISO.
Gaya MLA
Organization, International, Standard.
"Heat-Treatable Steels, Alloys Steels and Free-Cutting Steels-Port 9: Wrought Free-Cutting Steels".
USA:
ISO,
1988.
Book.