Cita APA (7th ed.)

Popkin, G. S., & Pike, A. H. (1981). Introduction to data processing (2nd ed.). Houghton Mifflin.

Cita Chicago (17th ed.)

Popkin, Gary S., i Arthur H. Pike. Introduction to Data Processing. 2nd ed. Boston: Houghton Mifflin, 1981.

Cita MLA (9th ed.)

Popkin, Gary S., i Arthur H. Pike. Introduction to Data Processing. 2nd ed. Houghton Mifflin, 1981.