Gaya APA
MAULAND, R, E. (2015).
SAFETY MECHANICAL Prevention of mechanical hazards .
Purwakarta:
MAULAND Ventures Service.
Gaya MLA
MAULAND, RICHO, E..
"SAFETY MECHANICAL Prevention of mechanical hazards".
Purwakarta:
MAULAND Ventures Service,
2015.
Text.