APA (7th ed.) Citation

Spencer, D. D. (1981). Introduction to information processing (3rd ed.). C.E. Merrill.

Chicago Style (17th ed.) Citation

Spencer, Donald D. Introduction to Information Processing. 3rd ed. Columbus, Ohio: C.E. Merrill, 1981.

MLA (9th ed.) Citation

Spencer, Donald D. Introduction to Information Processing. 3rd ed. C.E. Merrill, 1981.