Beal, Tim
North Korea : the struggle against American power /​ Tim Beal
Pluto Press, 2005
 Buku Teks SO
Taylor, George E.
Struggle for North China
New York Institute of Pasific Relations 1940
 Buku Teks
Wilson, Eva, 1925-
North American Indian designs
British Museum, 1998
 Buku Referensi
Robertson QC, Geoffrey
Crimes against humanity the struggle for global justice
Penguin Books, 2000
 Buku Teks
Weale, Putnam
Chang Tso-Lin's struggle against the communist menace
Kelly & Walsh, 1927
 Buku Teks SO