Ginberg, Eli, author
The Negro potential
Columbia University Press, 1956
 Buku Teks
Quarles, Benjamin, author
The Negro in The Making America
Macmillan, 1969
 Buku Teks
And why not every man? : the story of the fight against negro slavery assembled and / edited by Herbert Aptheker
Seven Seas, 1961
 Buku Teks
Fauset, Arthur Huff
Black gods of the metropolis : Negro religious cults of the urban north / Arthur Huff Fauset
University of pennsylvania Press, 1944
 Buku Teks
Kellogg, Oliver Dimon, author
Fundamentals of potential theory
Springer-Verlag, 1967
 Buku Teks
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