Drisko, James W., author
Springer, 2012
eBooks
Pritchard, Colin, author
Routledge, 2006
Buku Teks
Grinnell, Richard M., author
Oxford University Press, 2018
Buku Teks
edited by Bruce A. Thyer and John S. Wodarski
John Wiley, 2007
Buku Teks
Meta Permanasari, author
2013
UI - Tesis Membership