APA Style
EIGHTEENTH ANNUAL CONVENTION. (1989).
Jakarta:
Indonesian Petroleum Association Jakarta.
Chicago Style
EIGHTEENTH ANNUAL CONVENTION.
.
Jakarta:
Indonesian Petroleum Association Jakarta,
1989.
Text.
MLA Style
EIGHTEENTH ANNUAL CONVENTION.
.
Jakarta:
Indonesian Petroleum Association Jakarta,
1989.
Text.
Turabian Style
EIGHTEENTH ANNUAL CONVENTION.
Jakarta:
Indonesian Petroleum Association Jakarta,
1989.
Print.