(1899). West Virgnia Agricultural Experiment Station: научное издание.
Chicago-čujuhus (17. p.)West Virgnia Agricultural Experiment Station: научное издание. 1899.
MLA-čujuhus (9. p.)West Virgnia Agricultural Experiment Station: научное издание. 1899.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.