Technology Review, Inc,
Majalah, Jurnal, Buletin
edited by Arthur Cotterell
Oxford Oxford University Press , 1980
Buku Teks
Faculty of Engineering. Universitas Indonesia, 2010
Majalah, Jurnal, Buletin
American Society of Mechanical Engineers, 2018
Majalah, Jurnal, Buletin
Symposium on Appropriate Technology. November 30, 1976, Jakarta
Jakarta: University of Indonesia, 1977
Buku Teks