Cita APA (7a ed.)

Porter, D. B. (1970). The negro in the United States: : a selected bibliography. : Library of Congress.

Cita Chicago Style (17a ed.)

Porter, Dorothy Burnett. The Negro in the United States: : A Selected Bibliography. Washington: : Library of Congress, 1970.

Cita MLA (8a ed.)

Porter, Dorothy Burnett. The Negro in the United States: : A Selected Bibliography. : Library of Congress, 1970.