APA aipamena

Reynolds, L. G., & Michas, N. A. [. b. (1971). Programmed Learning Aid for Principles of Economics: Macro. Illinois: Learning Systems Company.

Chicago Style aipamena

Reynolds, Lloyd G., và Nicholas A. [Assisted by] Michas. Programmed Learning Aid for Principles of Economics: Macro. Illinois: Learning Systems Company, 1971.

MLA aipamena

Reynolds, Lloyd G., và Nicholas A. [Assisted by] Michas. Programmed Learning Aid for Principles of Economics: Macro. Illinois: Learning Systems Company, 1971.