Cita APA (7a ed.)

SPENCER, D. D., & SPENCER, D. D. (1982). Data Processing An Introduction/Donald D.spencer. A Bell & howell.

Cita Chicago Style (17a ed.)

SPENCER, Donald D., y Donald D. SPENCER. Data Processing An Introduction/Donald D.spencer. A Bell & howell, 1982.

Cita MLA (8a ed.)

SPENCER, Donald D., y Donald D. SPENCER. Data Processing An Introduction/Donald D.spencer. A Bell & howell, 1982.