Gaya APA
Widharto. (2013).
Welding inspection .
Jakarta:
Mitra Wacana Media.
Gaya Chicago
Widharto.
Welding inspection.
Jakarta:
Mitra Wacana Media,
2013.
Text.
Gaya MLA
Widharto.
Welding inspection.
Jakarta:
Mitra Wacana Media,
2013.
Text.
Gaya Turabian
Widharto.
Welding inspection.
Jakarta:
Mitra Wacana Media,
2013.
Print.