APA (7th ed.) Citation

-. (1990). Proceedings of the nineteenth annual convention. Indonesian Petroleum Association.

Chicago Style (17th ed.) Citation

-. Proceedings of the Nineteenth Annual Convention. Indonesian Petroleum Association, 1990.

MLA (8th ed.) Citation

-. Proceedings of the Nineteenth Annual Convention. Indonesian Petroleum Association, 1990.

Warning: These citations may not always be 100% accurate.