The ecology of Sumatra
by Anthony J. Whitten ... [and others]
Gadjah Mada Uni. Press,, 1987
 Buku Teks
Agus Subagyo
Ekologi dan Konservasi Felidae di Taman Nasional Way Kambas, Sumatra, Indonesia = Ecology and Conservation of Felidae in way Kambas National Park, Sumatra, Indonesia
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2016
 UI - Disertasi Membership
Moh. Rifqi Al Author
Ekologi dan etnobotani pekarangan di Kecamatan Pariangan, Kabupaten Tanah Datar, Sumatra Barat = Ecology and ethnobotany of homegardens in Pariangan Subdistrict, Tanah Datar District, West Sumatra
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2019
 UI - Tesis Membership
Wojciechowski, Jerzy A.
Ecology of knowledge
Council for research in values and philosophy, [Date of publication not identified]
 Buku Teks SO
Odum, Eugene Pleasants
Basic ecology
Saunders College, 1983
 Buku Teks