Circular ... of the University of Illinois Engineering Experiment Station.
Chicago-čujuhus (17. p.)Circular ... of the University of Illinois Engineering Experiment Station.
MLA-čujuhus (9. p.)Circular ... of the University of Illinois Engineering Experiment Station.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.