APA Style
Ilyas, S., S.M. Tobing. (1994).
Coal exploration development report .
Jakarta:
Triaryani.
Chicago Style
Ilyas, S., S.M. Tobing.
Coal exploration development report.
Jakarta:
Triaryani,
1994.
Text.
MLA Style
Ilyas, S., S.M. Tobing.
Coal exploration development report.
Jakarta:
Triaryani,
1994.
Text.
Turabian Style
Ilyas, S., S.M. Tobing.
Coal exploration development report.
Jakarta:
Triaryani,
1994.
Print.