1.
Readings / workbook : principles of economics. Harvard: Harvard university; 1988.
Readings / workbook : principles of economics. Harvard : Harvard university, 22 mai 1988
Lindsey Lawrence B. (1988). Readings / workbook : principles of economics: Spring term 1988-1989. Harvard university.
Style de citation MLA (8e éd.)Lindsey Lawrence B. Readings / Workbook : Principles of Economics: Spring Term 1988-1989. Harvard university, 1988.
Attention : ces citations peuvent ne pas être correctes à 100%.