Heinrich, B. (1979). Bumblebee economics. Harvard University Press.
Chicago-čujuhus (17. p.)Heinrich, Bernd. Bumblebee Economics. Cambridge, MA: Harvard University Press, 1979.
MLA-čujuhus (9. p.)Heinrich, Bernd. Bumblebee Economics. Harvard University Press, 1979.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.