Espig, G. (1988). Ekologi: Seri Studi Pertanian Kerja Sama Jerman dan Indonesia. Saint Joseph's University.
Chicago Style (17th ed.) CitationEspig, Gustav. Ekologi: Seri Studi Pertanian Kerja Sama Jerman Dan Indonesia. Saint Joseph's University, 1988.
MLA (8th ed.) CitationEspig, Gustav. Ekologi: Seri Studi Pertanian Kerja Sama Jerman Dan Indonesia. Saint Joseph's University, 1988.
Warning: These citations may not always be 100% accurate.