Kreps, Juanita M., author
Our natural resources their development and use
Wilson, 1955
 Buku Teks
Newton, Isaac
The principia: mathematical principles natural philosophy
University of California press, 1999
 Buku Teks
The Natural resources of Flores Island / edited by Herwint Simbolon
Research and Development Center of Biology, 1998
 Buku Teks
Palupi Anggraeni, author
The contribution of natural resources on economic welfare in indonesia
Ministry of National Development Planning, 2017
 Artikel Jurnal
Palupi Anggraeni, author
The contribution of natural resources on economic welfare in indonesia
Ministry of National Development Planning, 2017
 Artikel Jurnal
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