Willis L Peterson. (1990). Principles of Economics: Macro (7th ed.). Universal.
Chicago Edition CitationWillis L Peterson. Principles of Economics: Macro. 7th ed. New Delhi: Universal, 1990.
MLA引文Willis L Peterson. Principles of Economics: Macro. 7th ed. Universal, 1990.
警告:這些引文格式不一定是100%准確.