Christopher, Paul, author
Dastan Books, 2006
Buku Teks
Pilger, John, author
Jonathan Cape, 1980
Buku Teks
Sebastian, Juliann G., author
Mosby, 1999
Buku Teks
Maich, Kimberly, author
Springer Nature, 2016
eBooks
by James A. Wolff ... [and others]
Kumarian Press, 1990
Buku Teks