Cita APA (7th ed.)
Aaseng, N. (1997). Black inventors. Facts on File, Inc.
Cita Chicago (17th ed.)
Aaseng, Nathan. Black Inventors. New York: Facts on File, Inc, 1997.
Cita MLA (9th ed.)
Aaseng, Nathan. Black Inventors. Facts on File, Inc, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.