Gaya APA
St, D., Nasional, A. (1987).
Specification and test method carbon steel pipes for machine structural purposes (1987).
:
Jakarta:DSN,.
Gaya MLA
St, Dewan., Nasional, Ardisasi.
"Specification and test method carbon steel pipes for machine structural purposes".
1987
:
Jakarta:DSN,,
1987.
Text.