Eastham, J. (1960). Graphical economics. Eng. Univ. Press.
Chicago-čujuhus (17. p.)Eastham, J. Graphical Economics. London: Eng. Univ. Press, 1960.
MLA-čujuhus (9. p.)Eastham, J. Graphical Economics. Eng. Univ. Press, 1960.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.