Pepen Supena
Peralatan bongkar sistem screw dan belt conveyor muatan batubara untuk kapal dengan kapasitas 900 ton/h
Fakultas Teknik Universitas Indonesia, 1992
 UI - Skripsi (Membership)
Campbell, Colin
Automobile suspensions
Chapman and Hall, 1981
 Buku Teks
Thorp, Roderick
Into the forest
Random House, 1961
 Buku Teks
Rutherfurd, Edward
The forest
Ballantine Books, 2000
 Buku Teks
Year : your lifetime in pictures / editor, Baldwin H. Ward
YEAR Incorporated, 1953
 Buku Teks