Gaya APA

Leftwith, R, (, R, E. (1997). The Price System and Resource Allocation (-). Chicago: Chicago: The Dryden Press,.

Gaya MLA

Leftwith, Richard, (dan, Ross, Eckert). "The Price System and Resource Allocation". - Chicago: Chicago: The Dryden Press,, 1997. Fakultas Ekonomi.