Png, I. (2016). Managerial Economics (5th.). Routledge.
Chicago-čujuhus (17. p.)Png, Ivan. Managerial Economics. 5th. New York: Routledge, 2016.
MLA-čujuhus (9. p.)Png, Ivan. Managerial Economics. 5th. Routledge, 2016.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.