APA (7th ed.) Citation

Spencer, D. D. (1977). Introduction to information processing (2d ed.). Merrill.

Chicago Style (17th ed.) Citation

Spencer, Donald D. Introduction to Information Processing. 2d ed. Columbus, Ohio: Merrill, 1977.

MLA (9th ed.) Citation

Spencer, Donald D. Introduction to Information Processing. 2d ed. Merrill, 1977.