Gunawan
Jurnal Teknologi Industri dan Informasi, 2001
Artikel Jurnal
edited by Arthur Cotterell
Oxford Oxford University Press , 1980
Buku Teks
Manuel Gausa, Vicente Guallart, Willy Muller, Federico Soriano, Fernando Porras, Jose Morales
ACTAR, 2003
Buku Referensi
MIT Press, 1999
Buku Teks SO
Moritani, Masanori
Nomura Securities, 1983
Buku Teks SO