Russell, James S., author
Island Press, 2011
eBooks
Pilling, David, author
Tim Duggan Books,, 2018
Buku Teks
Prilleltensky, Isaac, author
New Jersey, 2006
Buku Teks
edited by Josep Figueras, Martin McKee
McGraw-Hill, 2012
Buku Teks
Bradley, Ben, author
Wiley, 2015
Buku Teks