Cita APA (7a ed.)

Williams, J., & Dickerson, Y. (2001). The invisible cryptologists: African-Americans, WWII to 1956. Center for Cryptologic History, National Security Agency.

Cita Chicago Style (17a ed.)

Williams, Jeannette, y Yolande Dickerson. The Invisible Cryptologists: African-Americans, WWII to 1956. [Fort George G. Meade, Md.]: Center for Cryptologic History, National Security Agency, 2001.

Cita MLA (9a ed.)

Williams, Jeannette, y Yolande Dickerson. The Invisible Cryptologists: African-Americans, WWII to 1956. Center for Cryptologic History, National Security Agency, 2001.