Philippe Grange, author
The indonesian verbal suffix –nya : nominalization or subordination? / Philippe Grangé
University of Indonesia, Faculty of Humanities, 2015
 Artikel Jurnal
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
Pianka, Eric R.
Evolutionary ecology
Harper & Row, 1988
 Buku Teks
Dash, Madhab C.
Fundamentals of ecology
Tata McGraw-Hill , 2003
 Buku Teks