Soemarwoto, O. (1981). Environmental education and research in Indonesian universities. Maruzen Asia.
Čikaški stil citiranja (17. izdanje)Soemarwoto, Otto. Environmental Education and Research in Indonesian Universities. Singapore: Maruzen Asia, 1981.
MLA način citiranja (8. izdanje)Soemarwoto, Otto. Environmental Education and Research in Indonesian Universities. Maruzen Asia, 1981.
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