Cita APA (7th ed.)

Davis, W. S. (1981). Information processing systems (2nd ed.).

Cita Chicago (17th ed.)

Davis, William S. Information Processing Systems. 2nd ed. Reading, Mass. ; Addison-Wesley, 1981.

Cita MLA (9th ed.)

Davis, William S. Information Processing Systems. 2nd ed. 1981.