Doy, Clemens, author
1991
UI - Tesis (Membership)
Taylor,Keeanga-Yamatha, author
Haymarket Books, 2016
Buku Teks
Battle, Michael, author
Blackwell Publishing, 2006
Buku Teks
edited by Gladys L. Mitchell-Walthour, Elizabeth Hordge-Freeman
Palgrave Macmillan, 2016
Buku Teks
Johnson, Daniel Milo, author
Duke University Press, 1981
Buku Teks