edited by Andrea Scharnhorst, Katy Borner, Peter van den Besselaar
Springer-Verlag, 2012
eBooks
Byrne, David, author
Routledge, 1998
Buku Teks
edited by Diane H. Sonnenwald
Universityy of Texas Press, 2016
Buku Teks
Artikel Jurnal
Bovet, Daniel Piere, author
Prentice-Hall, 1994
Buku Teks