APA Citation

(1990). Kumpulan makalah seminar Yogyakarta, 8 Desember 1990. New York:University Consortium on the Environment.

Chicago Style Citation

Kumpulan Makalah Seminar Yogyakarta, 8 Desember 1990. New York:University Consortium on the Environment, 1990.

MLA Citation

Kumpulan Makalah Seminar Yogyakarta, 8 Desember 1990. New York:University Consortium on the Environment, 1990.

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