Breman, Jan
KITLV Press , 2002
Buku Teks
Russell, Bertrand, 1872-1970
Simon and Schuster , 1948
Buku Teks
Jeffrey, Richard
McGraw-Hill, 1981
Buku Teks
edited by Peter Godwin
UNDP Regional Project on HIV and Development, 1997
Buku Teks
edited by Ralph Braibanti and Joseph J. Spengler
Duke University Press , 1961
Buku Teks