APA Style
Widartojo, Joe, Syarifudin. (1997).
Indonesian coal mining development & company profiles 1997 .
Jakarta:
Indonesian Coal Mining Association.
Chicago Style
Widartojo, Joe, Syarifudin.
Indonesian coal mining development & company profiles 1997.
Jakarta:
Indonesian Coal Mining Association,
1997.
Text.
MLA Style
Widartojo, Joe, Syarifudin.
Indonesian coal mining development & company profiles 1997.
Jakarta:
Indonesian Coal Mining Association,
1997.
Text.
Turabian Style
Widartojo, Joe, Syarifudin.
Indonesian coal mining development & company profiles 1997.
Jakarta:
Indonesian Coal Mining Association,
1997.
Print.