Heibroner, R. (1968). Understanding macro economics (2nd.). Prentice Hall.
Chicago-čujuhus (17. p.)Heibroner, Robert. Understanding Macro Economics. 2nd. New Jersey: Prentice Hall, 1968.
MLA-čujuhus (9. p.)Heibroner, Robert. Understanding Macro Economics. 2nd. Prentice Hall, 1968.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.