Herendeen, Robert A
Ecological numeracy: quantitatif analysis of environmental issues/Robert A. Herendeen
John Wiley & Sons, 1998
 Buku Teks
Ecological assessment of Limau Manis's torrent frogs, West Sumatra
 Artikel Jurnal
Twesten, Gary, author
Wildlife ecology; a guide to the ecological approach of studying the wildlife of the central United States
Illinois Record Printing, 1989
 Buku Teks
Michael, P., author
Metode ekologi untuk penyelidikan lapangan dan laboratorium = Ecological methods for field and laboratory investigations
UI-Press , 1995
 Buku Teks
Handbook of ecological models used in ecosystem and environmental management
edited by Sven Erik Jorgensen
CRC Press, Taylor & Francis Group, 2011
 Buku Referensi
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