Cita APA (7th ed.)

Davis, G. A., & Donaldson, O. F. (1975). Blacks in the United States: A geographic perspective. Houghton Mifflin.

Cita Chicago (17th ed.)

Davis, George Arliss, i O. Fred Donaldson. Blacks in the United States: A Geographic Perspective. Boston: Houghton Mifflin, 1975.

Cita MLA (8th ed.)

Davis, George Arliss, i O. Fred Donaldson. Blacks in the United States: A Geographic Perspective. Houghton Mifflin, 1975.