Gillard, J. T. (1937). The Negro Challenges: Christianity, Communism, Catholicism. Baltimore.
Cita Chicago Style (17a ed.)Gillard, John Thomas. The Negro Challenges: Christianity, Communism, Catholicism. Baltimore, 1937.
Cita MLA (8a ed.)Gillard, John Thomas. The Negro Challenges: Christianity, Communism, Catholicism. Baltimore, 1937.
Precaución: Estas citas no son 100% exactas.