Alfian Y. Helmi
The importance of rubber: in the economic life of the population of Indonesia / Alfian Y. Helmi
Tintamas, 1954
 Buku Teks SO
The Effect of rubber mixing process on the curing characteristics of natural rubber = Pengaruh proses penggilingan karet terhadap karakteristik vulkanisasi karet alam
[Direktorat Riset dan Pengabdian Masyarakat Universitas Indonesia, Politeknik Negeri Sriwijaya, Palembang. Departemen Teknik Kimia], 2012
 Artikel Jurnal
Muliawati G. Siswanto
Sifat elektronis dari komposit karbon hitam-karet alam = Electronic properties of carbon black-natural rubber composite
Universitas Indonesia, 1988
 UI - Disertasi Membership
Knorr, K.E.
World rubber and its regulation
Stanford University Press, 1945
 Buku Teks SO
Phillips, Charles F.
Competition in the synthetic rubber industry
University of North Carolina , 1963
 Buku Teks