Chia, Josephine
Katak dalam tempurung = Frog under a coconut shell /​ Josephine Chia
Serambi Ilmu Semesta, 2014
 Buku Teks SO
Simanjuntak, Wasinton
The Use of Carbon Dioxide Released from Coconut Shell Combustion to Produce Na2CO3
Universitas Lampung. Faculty of Mathematics and Natural Science, 2014
 Artikel Jurnal
Donoghue, Emma
Frog music
Picador, 2015
 Buku Teks SO
Soesaptri Oediyani
The effect of reduction time and size distribution of mixed iron ore with coconut shell charcoal on the percentage of metallization by using a rotary kiln
Faculty of Engineering, Universitas Indonesia, 2016
 Artikel Jurnal
Yuniardi
Pemanfaatan serabut dan tempurung kelapa sebagai material ringan timbunan = The usage of coconut's fiber and shell as lightweight fill material
2008
 UI - Skripsi Open