Klimchuk, Marianne Rosner
John Wiley & Sons, 2012
Buku Teks
Hudson, Jennifer
Laurence King Pub , 2011
Buku Referensi
Chowdhury, G.G.
Facet Publishing, 2007
Buku Teks
Amalia Suzianti
Faculty of Engineering, Universitas Indonesia, 2015
Artikel Jurnal
Flynn, Janet-Beth McCann
Prentice-Hall, 1984
Buku Teks SO