APA-referens (7:e uppl.)

TOKHEIM, R. L. (1994). Theory and problems of digital principles.-- ed.3. McGraw-Hill.

Chicago-referens (17:e uppl.)

TOKHEIM, Roger L. Theory and Problems of Digital Principles.-- Ed.3. New York: McGraw-Hill, 1994.

MLA-referens (9:e uppl.)

TOKHEIM, Roger L. Theory and Problems of Digital Principles.-- Ed.3. McGraw-Hill, 1994.