APA引文

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

Trích dẫn kiểu Chicago

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

MLA引文

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

警告：这些引文格式不一定是100％准确.